https://status.dal.ca/ RSS feed of the Dalhousie Status Page updates. en-ca Thu, 2 Apr 2026 12:50:18 America/Halifax Copyright 2017 Dalhousie University. https://status.dal.ca/rss.php https://status.dal.ca/service.php?Service=6 2026-04-01 15:24:01 Service Restored

User impact: Users may have been intermittently unable to access their Exchange Online mailboxes in some connection methods.
More info: This issue may have intermittently impacted some users who attempted to access the Exchange Online service through the Outlook mobile apps or the new Outlook for Mac desktop client.
Final status: We've monitored the service for an extended period of time and confirmed that error counts have remained below pre-incident levels, confirming remediation. https://status.dal.ca/service.php?Service=6 2026-04-01 13:31:58 Service Degradation

Title: Some users may be unable to access their mailboxes through multiple connection methods in Exchange Online
User impact: Users may be unable to access their mailboxes through multiple connection methods in Exchange Online. https://status.dal.ca/service.php?Service=39 2026-04-01 12:54:23 Service Restored

Title: Some users receiving cross-cloud chat messages may have seen unknown users in Microsoft Teams
User impact: Users receiving cross-cloud chat messages may have seen unknown users in Microsoft Teams.
Final status: We've identified that a recent standard service update, intended to prepare the service for a new feature to improve the experience for organizations that use cross-cloud chat messages, inadvertently contained a code regression that was resulting in impact. We've reverted the aforementioned update and confirmed impact is no longer occurring after a period of monitoring.
Scope of impact: Impact was specific to some users receiving messages through Microsoft Teams.
Start time: Tuesday, March 24, 2026, at 6:00 PM UTC
End time: Wednesday, April 1, 2026, at 12:40 PM UTC
Root cause: A recent standard service update, intended to prepare the service for a new feature to improve the experience for organizations that use cross-cloud chat messages, inadvertently contained a code regression that was resulting in impact. https://status.dal.ca/service.php?Service=39 2026-04-01 11:10:14 Service Restored

Title: Some users may receive Microsoft Teams meeting invitations as “not supported calendar message.ics" attachments
User impact: Users may have received Microsoft Teams meeting invitations as “not supported calendar message.ics” attachments.
Final status: We've identified a regression was introduced with a recent feature implementation for meeting join link validations, which is leading to this issue. While we continue to investigate what led to this impact within the feature, we've disabled the feature to bypass the path of the regression and confirmed this has addressed the problem. https://status.dal.ca/service.php?Service=6 2026-04-01 08:43:44 Title: Some users may be unable to access custom add-ins through any Exchange Online connection method
User impact: Users may have been unable to access custom add-ins through any Exchange Online connection method.
More info: For additional guidance on managing Exchange Web Services, please refer to the following:
https://learn.microsoft.com/en-us/exchange/client-developer/exchange-web-services/how-to-control-access-to-ews-in-exchange
Final status: We’ve identified that a recent Exchange Web Services (EWS) deprecation update and an Exchange Online authentication change prevented users from accessing custom add-ins in Outlook. To remediate this issue, we rolled back both offending changes and verified through service monitoring that this action successfully resolved the impact. Admins that have disabled EWS may continue to experience this issue and we recommend that admins re-enable EWS at this time. For additional guidance on managing Exchange Web Services, please refer to the following:
https://learn.microsoft.com/en-us/exchange/client-developer/exchange-web-services/how-to-control-access-to-ews-in-exchange
Scope of impact: Some users who are attempted to access custom add-ins through all Exchange Online connection methods may have been impacted.
Start time: Thursday, March 12, 2026, at 10:04 PM UTC
End time: Friday, March 27, 2026, at 1:40 AM UTC
Root cause: A recent EWS deprecation update and an Exchange Online authentication change prevented users from accessing custom add-ins in Outlook.

This is the final update for the event. https://status.dal.ca/service.php?Service=6 2026-04-01 08:42:03 Title: Some users may be unable to access the default add-ins in Outlook
User impact: Users may have been unable to access the default add-ins in Outlook.
More info: This issue impacted both the Outlook desktop client and Outlook on the web. Some affected users found that the “My Templates” icon was missing from the Outlook ribbon, and others were unable to find templates in the AppData Microsoft Templates location, even though templates were known to exist and were still being used by non-impacted users. Some users also reported that the Viva Insights add-in was impacted by this event.
Final status: We’ve identified that a recent Exchange Web Services (EWS) deprecation update and an Exchange Online authentication change prevented users from accessing default add-ins in Outlook. To remediate this issue, we rolled back both offending changes and verified through service monitoring that this action successfully resolved the impact. Admins that have disabled EWS may continue to experience this issue and we recommend that admins re-enable EWS at this time. For additional guidance on managing Exchange Web Services, please refer to the following:
https://learn.microsoft.com/en-us/exchange/client-developer/exchange-web-services/how-to-control-access-to-ews-in-exchange
Scope of impact: Some users attempting to access or use the default add-ins within Outlook may have been impacted.
Start time: Thursday, March 12, 2026, at 10:04 PM UTC
End time: Friday, March 27, 2026, at 1:40 AM UTC
Root cause: A recent EWS deprecation update and an Exchange Online authentication change prevented users from accessing default add-ins in Outlook.
Next steps:
- We’re reviewing how the impacting changes prevented users from accessing default add-ins so we can avoid similar issues in the future, as EWS is slated to be deprecated by October 2026.
This is the final update for the event. https://status.dal.ca/service.php?Service=39 2026-04-01 08:35:27 Service Restored

Title: Some guest users may be unable to unmute their mics in recurring Microsoft Teams meetings when recording is enabled https://status.dal.ca/service.php?Service=8 2026-03-31 08:30:02 Title: Users may be unable to sync their mailboxes in Exchange Online and receive an error message
User impact: Users may have been unable to sync their mailboxes in Exchange Online and received an error message.
More info: Affected users may have received the following error: "EndpointNotFoundTransientException".
Final status: We've confirmed that the deployment of the code fix has completed, and we've validated with internal monitoring that the impact is remediated.
Scope of impact: This event impacted any user that attempted to sync a mailbox in Exchange Online.
Start time: Thursday, March 19, 2026, at 10:00 AM UTC
End time: Monday, March 30, 2026, at 7:05 PM UTC
Root cause: A recent update intended to improve our internal logging introduced an issue that prevented mailbox syncs from occurring and resulted in the impact.
Next steps:
- We're further reviewing the recent update to understand how exactly the issue was introduced, and to understand what prevented it from being detected in our update testing and validation procedures, which will allow us to prevent similar issues in future updates.
This is the final update for the event. https://status.dal.ca/service.php?Service=21 2026-03-31 07:26:22 Users may be unable to access the new Clipchamp start page within SharePoint Online. https://status.dal.ca/service.php?Service=21 2026-03-30 13:21:16 Resolved:
- Some users’ SharePoint Online search returns may not have been prioritizing high-relevancy items in the results. https://status.dal.ca/service.php?Service=38 2026-03-30 08:45:42 User impact: Users saw incomplete device assignments for Windows feature updates in Intune and Autopatch.

Final status: After a period of monitoring to ensure the remaining assignments were updated as expected, we've confirmed the impact has been remediated.

Scope of impact: Your organization was affected by this event, and all users see incomplete device assignments in Intune and Windows Autopatch for Windows feature updates. This section may have been updated as our investigation continues.
Start time: Saturday, March 14, 2026, at 6:00 AM AST
End time: Thursday, March 26, 2026, at 8:00 AM AST

Root cause: Underlying systems responsible for propagating device assignments between Intune and Windows Autopatch became out of sync, resulting in impact.

Next steps:
- We're continuing our analysis of the underlying systems to determine how they became out of sync so we can take all necessary measures to prevent this from reoccurring.
This is the final update for the event. https://status.dal.ca/service.php?Service=7 2026-03-29 13:49:35 Access to mysupport.dal.ca has now been returned to normal. Thank you for your patience. https://status.dal.ca/service.php?Service=7 2026-03-29 08:14:07 Mysupport.dal.ca is now available.

Until further notice, Mysupport.dal.ca is available ONLY while connected to an on-campus network (wired, Dalhousie wifi or Dalhousie VPN) https://status.dal.ca/service.php?Service=7 2026-03-28 17:58:10 Mysupport.dal.ca is currently unavailable.

Technicians are aware.

Updates will be posted as available. https://status.dal.ca/service.php?Service=37 2026-03-26 13:59:53 Ticket ID: 21110 (Maintenance - Scheduled - Critical)
Start Date: Apr 01, 2026 12:00 AM EST
End Date: Apr 01, 2026 06:00 AM EST
Cause: Upgrade - Software

Service Outage Details
PTT Dispatcher service will be disconnected and will then get a message to click on upgrade Plugin Version to continue using the service.

Impacted Services
Push to Talk

Impacted Locations / Sites
Canada https://status.dal.ca/service.php?Service=39 2026-03-26 07:37:05 Resolved:
- Some users may have been unable to view the Planner app in Microsoft Teams. https://status.dal.ca/service.php?Service=43 2026-03-26 07:29:30 Resolved:

Power BI:
- Users may have experienced delays or problems with publishing from the Power BI desktop application. https://status.dal.ca/service.php?Service=43 2026-03-25 15:21:50 Power BI:
- Users may experience delays or problems with publishing from the Power BI desktop application. https://status.dal.ca/service.php?Service=39 2026-03-25 08:50:14 Title: Some users may be unable to view the planner app in Microsoft Teams
User impact: Users may be unable to view the planner app in Microsoft Teams.
Current status: We're reviewing service monitoring telemetry and system logs to isolate the root cause, in order to develop a remediation plan.
Scope of impact: Your organization is affected by this event, and some users attempting to view or use the planner app in Microsoft Teams may be impacted.
Next update by: Wednesday, March 25, 2026, at 12:00 PM UTC https://status.dal.ca/service.php?Service=39 2026-03-25 07:48:22 Title: Users may experience video quality issues in Microsoft Teams Rooms on Windows and Android devices
User impact: Users may have experienced video quality issues in Microsoft Teams Rooms on Windows and Android devices.
More info: Impact was specific to users in meetings with at least one participant sharing video from Microsoft Teams Rooms devices. Other Microsoft Teams clients weren't affected.
Users may have been able to circumvent this issue by disabling Cloud IntelliFrame within the device settings.
Final status: We applied a fix to affected infrastructure to reduce the traffic load and have confirmed through telemetry that the impact was remediated.
Scope of impact: Some users joining meetings with a participant using Microsoft Teams Rooms on Windows and Android devices may have been impacted.
Start time: Monday, March 16, 2026, at 11:00 PM UTC
End time: Tuesday, March 24, 2026, at 6:00 PM UTC
Root cause: A recent feature deployment that intended to improve call handling caused a large influx of service traffic to accumulate on a subset of infrastructure that facilitates Teams Rooms device video, causing traffic to not process as expected, which resulted in impact.
Next steps:
- We're reviewing our feature update deployment procedures to develop improved methods of preventing similar impact during future deployments.
This is the final update for the event. https://status.dal.ca/service.php?Service=38 2026-03-25 07:45:30 Title: Users may encounter errors when interacting with the Microsoft Copilot Facilitator bot within any Microsoft Teams client
User impact: Users may have encountered errors when interacting with the Copilot Facilitator bot within any Microsoft Teams client.
More info: Affected users were seeing the following message:
"Some content isn't showing because your Teams setup doesn't support it. If you reply to this message, Facilitator won't be able to take any action."
Despite the error message, all interactions with the Facilitator bot appeared to complete as expected.
Final status: After enabling the configuration to the entire affected environment, our testing with affected users has validated that it has addressed the errors experienced when interacting with the Copilot Facilitator bot within Microsoft Teams and remediated the impact.
Scope of impact: Any user interacting with the Copilot Facilitator bot within any Microsoft Teams client may have been affected.
Start time: Friday, March 13, 2026, at 9:02 PM UTC
End time: Tuesday, March 24, 2026, at 7:25 PM UTC
Root cause: A recent feature update to the facilitator bot was released without an accompanying configuration update, resulting in impact.
Next steps:
- We're further analyzing the offending facilitator bot feature update to determine why the accompanying configuration update wasn't included, and to prevent similar problems in the future.
This is the final update for the event. https://status.dal.ca/service.php?Service=6 2026-03-25 07:43:03 Title: Some users may be unable to access custom add-ins through any Exchange Online connection method
User impact: Users may be unable to access custom add-ins through any Exchange Online connection method.
Current status: As we progress with our root cause analysis and confirm the source for this event, we're working with some reporting users to test a potential workaround that may remediate the impact. 
Scope of impact: Some users who are attempting to access custom add-ins through all Exchange Online connection methods may be impacted. This section may be updated as our investigation continues.
Next update by: Wednesday, March 25, 2026, at 9:30 PM UTC https://status.dal.ca/service.php?Service=6 2026-03-24 12:13:43 Title: Some users may have been unable to access their Exchange Online mailboxes using the Outlook desktop client
User impact: Users may have been unable to access their Exchange Online mailboxes using the Outlook desktop client.
More info: Impacted users may have received a 401 error message.
Final status: We’ve confirmed that reverting the change successfully remediated the impact and restored the service.
Scope of impact: Some users attempting to access their Exchange Online mailboxes via the Outlook desktop client may have been impacted.
Start time: Tuesday, March 24, 2026, at 5:40 AM UTC
End time: Tuesday, March 24, 2026, at 1:00 PM UTC
Root cause: A recent service change introduced an unexpected behaviour that prevented part of the service from operating as designed, resulting in impact.
Next steps:
- We'll continue to closely monitor the service to ensure it remains healthy.
- We're reviewing our deployment procedures to better identify similar issues during our development and testing cycles.
This is the final update for the event. https://status.dal.ca/service.php?Service=6 2026-03-24 12:00:38 Title: Some users may be unable to access their Exchange Online mailboxes using the Outlook desktop client
User impact: Users may be unable to access their Exchange Online mailboxes using the Outlook desktop client.
More info: Impacted users may receive a 401 error message.
Current status: We’ve identified that a recent service change may be causing impact to occur. We’ve reverted the change to restore normal service and are monitoring service data to confirm the mitigation is working as expected.
Scope of impact: Some users attempting to access their Exchange Online mailboxes via the Outlook desktop client may be impacted. This information may be updated as our investigation continues.
Next update by: Tuesday, March 24, 2026, at 3:00 PM UTC https://status.dal.ca/service.php?Service=6 2026-03-24 11:20:53 Service Restored

Title: Some users’ outbound email messages may display an unexpected sender name in Exchange Online
User impact: Users’ outbound email messages may have displayed an unexpected sender name in Exchange Online.
More info: When affected users sent email to external recipients, the sender name shown may have been the mailbox DisplayName instead of the configured SimpleDisplayName.
Final status: We've confirmed through internal testing that impact is no longer occurring. While no further outbound messages should be impacted, email messages that were already sent with the unexpected sender name will continue to show the sender name used when originally sent.
Scope of impact: Some users sending email to external recipients in Exchange Online may have been impacted.
Start time: Thursday, March 5, 2026, at 10:00 PM UTC
End time: Monday, March 23, 2026, at 6:40 PM UTC
Root cause: A recent service update introduced new outbound mail behavior that caused Exchange Online to stop honoring the configured SimpleDisplayName in some outbound email scenarios, resulting in impact.
Next steps:
- We're reviewing our update testing and validation methods to better identify issues such as this prior to deployment so we can prevent similar impact in the future.
This is the final update for the event. https://status.dal.ca/service.php?Service=38 2026-03-24 09:24:46 Service Restored

Title: Users may be unable to view or use the embedded Microsoft Teams chat panel in Edge, Outlook, or Outlook on the web
User impact: Users may have been unable to view or use the embedded Microsoft Teams chat panel.
More info: When users attempted to open the Microsoft Teams chat panel in Edge, Outlook, or Outlook on the web they may have received an error that stated the chat couldn't be loaded or a blank chat list.
Final status: We've reversed the offending service update and confirmed through service health telemetry that the impact has been remediated.
Scope of impact: Any user attempting to view or use the embedded Microsoft Teams chat panel in Edge, Outlook, or Outlook on the web may have been impacted.
Start time: Friday, March 20, 2026, at 2:22 PM UTC
End time: Monday, March 23, 2026, at 7:20 PM UTC
Root cause: A recent performance optimization service change introduced a code issue that caused impact.
Next steps:
- We're reviewing our service update testing and validation procedures to identify and prevent similar code issues affecting the Microsoft Teams chat panel in deployments moving forward.
This is the final update for the event. https://status.dal.ca/service.php?Service=6 2026-03-23 08:42:22 Title: Some users may be unable to access the My Templates add-in in Outlook
User impact: Users may be unable to access the My Templates add-in in Outlook.
More info: This issue impacts both the Outlook desktop client and Outlook on the web. Some affected users find that the “My Templates” icon is missing from the Outlook ribbon and others may be unable to find templates in the AppData Microsoft Templates location, even though templates are known to exist and may still be being used by other (non-impacted) users.
Current status: We’re continuing to analyze system logs and service data to isolate a potential root cause and determine next steps for mitigation.
Scope of impact: Some users attempting to access or use the My Templates add-in within Outlook may be impacted. This information may be updated as our investigation continues.
Next update by: Monday, March 23, 2026, at 7:00 PM UTC https://status.dal.ca/service.php?Service=6 2026-03-23 07:57:12 Title: Some users may be unable to access their Exchange Online mailboxes through multiple connection methods
User impact: Users may have been unable to access their Exchange Online mailboxes through multiple connection methods.
More info: The following connection methods were affected:
- Messaging Application Programming Interface (MAPI)
- Outlook on the web
Final status: Our investigation determined that a portion of infrastructure responsible for facilitating mailbox access requests was performing below acceptable thresholds, which resulted in the impact. Our automated recovery system restarted the infrastructure to repair this problem, and we confirmed that service was restored after monitoring the environment.
Scope of impact: Some users in Canada who attempted to access their mailboxes may have been impacted.
Start time: Friday, March 20, 2026, at 12:42 PM UTC
End time: Friday, March 20, 2026, at 5:39 PM UTC
Root cause: Our investigation determined that a portion of infrastructure responsible for facilitating mailbox access requests was performing below acceptable thresholds, which resulted in the impact.
Next steps:
- We're continuing to analyze the affected infrastructure to determine how it got into an unhealthy state so we can address any insufficiencies to prevent this from reoccurring.
This is the final update for the event. https://status.dal.ca/service.php?Service=6 2026-03-23 07:56:03 Title: Some users experience errors when attempting to create shared mailboxes in Exchange Online
User impact: Users experience errors when attempting to create shared mailboxes in Exchange Online.
Current status: We're analyzing HTTP Archive format (HAR) logs to identify the underlying root cause and a mitigation plan.
Scope of impact: Your organization is affected by this event, and some users attempting to create shared mailboxes in Exchange Online may be impacted.
Next update by: Friday, March 20, 2025, at 5:30 PM UTC https://status.dal.ca/service.php?Service=38 2026-03-23 07:54:52 Title: Users see incomplete data Windows feature updates in Microsoft Intune and Windows Autopatch
User impact: Users see incomplete data Windows feature updates in Microsoft Intune and Windows Autopatch.
Current status: This incident is a continuation of the event previously communicated via AH1256193. We're continuing our analysis of service telemetry from the affected infrastructure to identify the root cause of impact and develop remediation actions.
Scope of impact: Your organization is affected by this event, and all users see incomplete data in Microsoft Intune and Windows Autopatch for Windows feature updates. This section may be updated as our investigation continues.
Next update by: Friday, March 20, 2026, at 11:00 PM UTC https://status.dal.ca/service.php?Service=39 2026-03-23 07:53:20 Service Degradation

Title: Users may encounter errors when interacting with the Microsoft Copilot Facilitator bot within any Microsoft Teams client
User impact: Users may encounter errors when interacting with the Copilot Facilitator bot within any Microsoft Teams client.
More info: Affected users are seeing the following message:
"Some content isn't showing because your Teams setup doesn't support it. If you reply to this message, Facilitator won't be able to take any action."
Despite the error message, all interactions with the Facilitator bot appear to complete as expected.
Current status: We've received reports of users encountering errors when interacting with the Copilot Facilitator bot within any Microsoft Teams client. We're reviewing recent updates which may be contributing to impact and determine our next steps.
Scope of impact: Any user interacting with the Copilot Facilitator bot within any Microsoft Teams client may be affected.
Next update by: Friday, March 20, 2026, at 9:30 PM UTC https://status.dal.ca/service.php?Service=6 2026-03-23 07:51:19 Service Degradation

Title: Users may be unable to sync their mailboxes in Exchange Online and receive an error message
User impact: Users may be unable to sync their mailboxes in Exchange Online and receive an error message.
More info: Affected users may receive the following error: "EndpointNotFoundTransientException"
Current status: We determined that a recent update intended to improve our internal logging introduced an issue that’s preventing mailbox syncs from occurring, resulting in the impact. We're deploying a code fix to address this issue and anticipate that it will complete its deployment by our next scheduled update.
Scope of impact: This event impacts any user attempting to sync a mailbox in Exchange Online.
Start time: Thursday, March 19, 2026, at 10:00 AM UTC
Root cause: A recent update intended to improve our internal logging introduced an issue that’s preventing mailbox syncs from occurring, resulting in the impact.
Next update by: Monday, March 23, 2026, at 7:30 PM UTC https://status.dal.ca/service.php?Service=9 2026-03-23 08:38:59 Network maintenance successfully completed. https://status.dal.ca/service.php?Service=8 2026-03-23 08:38:11 Network maintenance successfully completed. https://status.dal.ca/service.php?Service=9 2026-03-20 10:13:33 Maintenance will be performed on the Dalhousie network between 5:00-7:00AM on Saturday March 21st. This necessary maintenance work may result in multiple brief outages (of less than 5 minutes) affecting various services hosted in Dalhousie's Datacentres.

Dalhousie student residence WIFI will be unaffected. https://status.dal.ca/service.php?Service=8 2026-03-20 10:14:27 Maintenance will be performed on the Dalhousie network between 5:00-7:00AM on Saturday March 21st. This necessary maintenance work may result in multiple brief outages (of less than 5 minutes) affecting various services hosted in Dalhousie's Datacentres.

Dalhousie student residence WIFI will be unaffected. https://status.dal.ca/service.php?Service=36 2026-03-20 10:56:41 Providor Change Control Completion Notice


Update Information: This work has been rescheduled to 20 March from 20 February, sorry for any inconvenience this may have caused.

Customer: Canary NOC

Change Control ID : 2175233

Start Date: 2026-03-20

End Date: 2026-03-20

Country: Canada

Location Of Work: Rose Blanche - NL

Reason For Work: Network Testing/Maintenance

Release Window (24 hr format): 00:00 - 06:00 Newfoundland

Affected Circuits:
00152705 - Fundy Web Canarie 10Gig - 228 Elizabeth Ave, St John's, NL <> 6225 University Ave, Halifax, NS

Service Impact: Your services will be impacted while we perform maintenance on a troubled Transport Link. https://status.dal.ca/service.php?Service=6 2026-03-20 10:53:18 User impact: Users may be intermittently unable to access their Exchange Online mailboxes with the Outlook mobile apps.

More info: This issue impacts both the Android and iOS mobile app experiences.

Current status: We’re continuing our review of Outlook mobile logs and service telemetry to isolate the source of the issue and determine appropriate remediation actions.
Scope of impact: Impact may occur for some users intermittently unable to access their Exchange Online mailboxes with the Outlook mobile apps.

Next update by: Thursday, March 19, 2026, at 2:30 PM AST https://status.dal.ca/service.php?Service=39 2026-03-19 13:15:23 User impact: Users may experience video quality issues in Teams Rooms on Windows and Android devices.

More info: Users may be able to circumvent this issue by disabling Cloud IntelliFrame within the device settings.

Current status: We're investigating a potential issue with users experiencing video call degradation within Teams Rooms (MTR) on both Windows and Android platforms and are analyzing service telemetry to help us identify the root cause.

Scope of impact: Some users attempting to use Teams Rooms on Windows and Android devices may be impacted.
Next update by: Thursday, March 19, 2026, at 7:00 AM AST https://status.dal.ca/service.php?Service=6 2026-03-19 13:08:25 User impact: Users may see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable.

More info: While we are working to remediate the impact, admins can bypass the issue by manually editing the working hours and the time zone for the meeting rooms.

Current status: Based on feedback received regarding this communication, we've edited the More info, Scope of impact, and Root cause sections of this communication to align with our current understanding of the affected scenario. Additionally, we've completed validation of the fix and have begun its deployment. We're monitoring as it progresses and will provide a completion timeline when one becomes available.

Scope of impact: Any users that are trying to select a meeting room when scheduling meetings in Exchange Online may be impacted. This information may be updated as our investigation continues.
Start time: Monday, December 8, 2025, at 3:04 AM UTC

Root cause: A recent expansion of the feature logic used to book rooms for scheduled meetings contains a code complication which automatically sets the meeting rooms' default working hours to appear in Pacific Standard Time instead of their accurate time zone.
Next update by: Friday, March 26, 2026, at 11:00 PM UTC https://status.dal.ca/service.php?Service=39 2026-03-19 11:23:44 Title: Users may be unable to mention bots in Teams

User impact: Users may have been unable to mention bots in Teams.

More info: Impacted bots included any bot in Teams that had an authentication configuration defined on the bot, such as, but not limited to:
- Project Agent
- Frontline Attendee
- Mainline Attendee
- Chat Agent

Final status: They've confirmed after monitoring service health telemetry that impact was successfully remediated for users after completing our rollback of the affecting deployment.
Scope of impact: This issue may have impacted any user attempting to mention bots in Teams.

Start time: Wednesday, March 18, 2026, at 3:45 PM AST
End time: Wednesday, March 18, 2026, at 5:40 PM AST

Root cause: A recent deployment to a service which bots performance was dependent on caused an issue resulting in bots becoming unresponsive.

Service has been restored. https://status.dal.ca/service.php?Service=36 2026-03-19 11:19:36 Providor Change Control Completion Notice


Customer: ACORN NS

Change Control ID : 2211362

Start Date: 2026-03-19

End Date: 2026-03-19

Country: Canada

Location Of Work: Halifax, NS

Reason For Work: Network Testing/Maintenance

Release Window (24 hr format): 00:00 - 06:00 Atlantic

Affected Circuits:
acorn-amhr-1.acorn.mns.eastlink.ca
acorn-blby-1.acorn.mns.eastlink.ca
acorn-hfxw-1.acorn.mns.eastlink.ca
acorn-kdc-1.acorn.mns.eastlink.ca
acorn-nwgl-1.acorn.mns.eastlink.ca
acorn-nwmn-1.acorn.mns.eastlink.ca
acorn-pnnt-1.acorn.mns.eastlink.ca
acorn-sdc-1.acorn.mns.eastlink.ca
acorn-sydn-1.acorn.mns.eastlink.ca
acorn-trur-1.acorn.mns.eastlink.ca
acorn-wdsr-1.acorn.mns.eastlink.ca
acorn-yrmo-1.acorn.mns.eastlink.ca
acorn-ytwr-1.acorn.mns.eastlink.ca

Service Impact: Your services will be impacted, one at a time, will we perform Software Upgrades. https://status.dal.ca/service.php?Service=39 2026-03-19 09:39:09 Service Restored


Title: Some users may see Microsoft Teams meeting invitations are being received as “not supported calendar message.ics"
User impact: Users may have seen Microsoft Teams meeting invitations delivered as “not supported calendar message.ics” attachments.
More info: This affected users sending invitations from organizations within our government infrastructure to non-government organizations; other users were unaffected.
Final status: We've confirmed through internal testing and with previously affected users that disabling the change remediated impact.
Scope of impact: This incident impacted users receiving Microsoft Teams meeting invitations who may have seen the invitation delivered as a “not supported calendar message.ics” attachment.
Start time: Monday, March 16, 2026, at 11:03 PM UTC
End time: Wednesday, March 18, 2026, at 9:20 PM UTC
Root cause: A recent change intended to improve validation of meeting join links in calendar invitations resulted in valid Microsoft Teams meeting invitations not being processed correctly, causing them to be delivered as unsupported .ics attachments.
Next steps:
- We're investigating how the recent change intended to improve validation of meeting join links in calendar invitations resulted in valid Microsoft Teams meeting invitations not being processed correctly to prevent this problem from happening again.
This is the final update for the event. https://status.dal.ca/service.php?Service=39 2026-03-18 15:52:28 Title: Some users may see Teams meeting invitations are being received as “not supported calendar message.ics"

Current status: Our analysis of the reproductions of impact provided by affected users has been inconclusive thus far in identifying the issue, although additional evaluation is needed of the reproduction examples and logs supplied. We're also determining what correlating service side logs may be needed to assist in this process.

Scope of impact: This incident impacts using receiving Teams meeting invitations who may see the invitation as a “not supported calendar message.ics" attachment. This information may be updated as our investigation continues.

Next update by: Wednesday, March 18, 2026, at 2:30 PM AST https://status.dal.ca/service.php?Service=38 2026-03-18 15:49:54 Title: Some users in the United States may be intermittently unable to access some Offce 365 services

More info: The following services may have been impacted:
- Exchange Online
- O365 Teams

Final status: We've confirmed that the service remains healthy after manually reinstating the entire network infrastructure that was slated for active service load and impact is remediated.
Scope of impact: Some users in the United States may have been intermittently unable to access some O365 services.

Start time: Wednesday, March 18, 2026, at 10:00 AM AST
End time: Wednesday, March 18, 2026, at 11:08 AM AST

Root cause: A portion of networking infrastructure, slated for reinstatement to active service, had been only partially reinstated, which led to load balancing issues when handling service traffic. https://status.dal.ca/service.php?Service=38 2026-03-18 15:19:53 Title: Some users in the United States may be intermittently unable to access some Office365 services

More info: The following services may have been impacted:
- Exchange Online
- O365 Teams
Final status: We've confirmed that the service remains healthy after manually reinstating the entire network infrastructure that was slated for active service load and impact is remediated.

Start time: Wednesday, March 18, 2026, at 10:00 PM AST
End time: Wednesday, March 18, 2026, at 11:08 AM AST

Root cause: A portion of networking infrastructure, slated for reinstatement to active service, had been only partially reinstated, which led to load balancing issues when handling service traffic. https://status.dal.ca/service.php?Service=38 2026-03-18 13:17:42 Title: Investigating user reports of issues with Office 365 products

User impact: We don't have details on impact yet. We're seeing an increase in user reported issues above our alerting threshold.

Current status: We are reviewing service telemetry and available information to determine if there is an issue happening and we'll update this message shortly with our latest findings.
This communication serves as a preliminary notification about a potential issue affecting your service. https://status.dal.ca/service.php?Service=39 2026-03-18 12:40:29 Title: Some users may be unable to utilize spell check in Teams desktop client

User impact: Users may have been unable to utilize spell check in Teams desktop client.

Final status: We've reverted the offending code change and confirmed with affected users that impact is remediated after they restarted their Teams desktop client. This confirms that the offending change intended for general service optimizations contained a code issue that resulted in impact.

Scope of impact: This issue may have affected some users utilizing the Teams desktop client on Windows devices.

Start time: Tuesday, March 10, 2026, at 11:48 AM AST
End time: Monday, March 16, 2026, at 6:28 PM AST

Root cause: A recent code deployment intended for general service optimizations contained a code issue that resulted in impact. https://status.dal.ca/service.php?Service=38 2026-03-18 08:38:07 Restored:
- Some users may have been unable to access Office.com or the Microsoft 365 Copilot web sign‑in pages. https://status.dal.ca/service.php?Service=36 2026-03-17 13:09:34 Provider Change Control Completion Notice


Update Information: This work has been rescheduled to 17 March from 17 February, sorry for any inconvenience this may have caused.

Customer: Canary NOC

Change Control ID : 2184743

Start Date: 2026-03-17

End Date: 2026-03-17

Country: Canada

Location Of Work: St Johns - NL

Reason For Work: Damaged Fiber Cables

Release Window (24 hr format): 00:01 - 06:00 Newfoundland

Affected Circuits:
00152705 - Fundy Web Canarie 10Gig - 228 Elizabeth Ave, St John's, NL <> 6225 University Ave, Halifax, NS

Service Impact: Your services will be impacted while we perform repairs on Damaged Fiber Cables https://status.dal.ca/service.php?Service=21 2026-03-17 12:21:06 Some users’ SharePoint Online search returns may not be prioritizing high-relevancy items in the results. https://status.dal.ca/service.php?Service=39 2026-03-17 12:04:39 Service Restored

Title: Some users may have been unable to start recordings and transcriptions in Microsoft Teams town hall events
User impact: Users may have been unable to start recordings and transcriptions in Microsoft Teams town hall events.
More info: The recording option was disabled and marked as unavailable, even when the event policy was enabled for town hall.
Final status: We’ve identified a recent configuration change was incorrectly misinterpreting recording eligibility, causing permissions to be treated as unavailable even when recording policies were enabled. We've reverted the configuration update to restore expected recording functionality for affected environments, and can confirm that the issue is resolved after a period of monitoring service health.
Scope of impact: Some users attempting to record meetings and transcriptions in town hall events within Microsoft Teams may have been impacted.
Start time: Wednesday, March 11, 2026, at 4:57 PM UTC
End time: Tuesday, March 17, 2026, at 12:01 PM UTC
Root cause: A recent configuration change caused the service to misinterpret recording eligibility, resulting in recording permissions to be treated as unavailable even when recording policies were enabled.
Next steps:
- We’re reviewing our deployment and change validation procedures to help prevent similar configuration issues in the future.
This is the final update for the event. https://status.dal.ca/service.php?Service=38 2026-03-17 11:28:39 Reoccurring issue from March 16/26:
Some users may be unable to access Office.com or the Microsoft 365 Copilot web sign‑in pages, including office.com/chat, m365.cloud.microsoft, m365.cloud.microsoft/chat and copilot.cloud.microsoft.

Users can access Microsoft Copilot through application-based Microsoft Copilot services. This includes, but is not limited to:
- Microsoft Copilot desktop app
- Copilot in Microsoft Teams
- Copilot in Office apps
User may be able to leverage https://m365.cloud.microsoft/search, and should be able to sign in using this page. Once signed in, users can access the impacted web-based office.com and Copilot clients. https://status.dal.ca/service.php?Service=6 2026-03-17 07:58:30 Service Degradation

Title: Some users are unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled
User impact: Users are unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled.
More info: If Teams Meeting Add-in is disabled then Outlook Classic functions as normal.
As a workaround, users can also perform an Online Repair of Office or update Outlook to the latest version to resolve the issue.
Current status: We've identified that a previous Outlook build version is causing impact to occur. We're working with your representatives to ensure that the latest Outlook version is enabled, to mitigate impact.
Scope of impact: Users attempting to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in and previous Outlook build version is enabled may be impacted.
Start time: Thursday, March 12, 2026, at 12:36 PM UTC
Root cause: A previous Outlook build version that is enabled is causing impact to occur.
Next update by: Thursday, March 19, 2025, at 10:30 AM UTC https://status.dal.ca/service.php?Service=38 2026-03-17 07:54:45 Service Restored

Title: Some users may be unable to access Office.com or the Microsoft 365 Copilot web sign‑in page
User impact: Users may have been unable to access Office.com or the Microsoft 365 Copilot web sign‑in page.
More info: The impacted web-client was office.com, and impacted Microsoft 365 Copilot web-clients were office.com/chat, m365.cloud.microsoft, m365.cloud.microsoft/chat and copilot.cloud.microsoft.
Users could access Microsoft Copilot through application-based Microsoft Copilot services. This included but wasn't limited to:
- Microsoft Copilot desktop app
- Copilot in Microsoft Teams
- Copilot in Office apps
User may have been able to leverage office.com/search, which redirects to https://m365.cloud.microsoft/search, and should've been able to sign in using this page. Once signed in, users could access the impacted web-based office.com and Copilot clients.
Final status: We've confirmed through our service-side telemetry that that the service health has fully recovered and impact has been successfully remediated.
Scope of impact: Impact was specific to some users who were served through the affected infrastructure.
Start time: Monday, March 16, 2026, at 1:05 PM UTC
End time: Monday, March 16, 2026, at 9:55 PM UTC
Root cause: The infrastructure that supports access to Office.com and the Microsoft 365 Copilot web sign-in page received a high volume of traffic that inhibited the rate in which some users' requests were being processed, preventing some users from accessing the service pages.
Next steps:
- We're continuing to monitor the affected infrastructure closely to ensure the service remains stable and to help inform any changes we can make to improve the service's resilience against similar issues in the future.
This is the final update for the event. https://status.dal.ca/service.php?Service=39 2026-03-16 14:50:41 Service Degradation

Title: Users may be unable to utilize spell check in Microsoft Teams desktop client
User impact: Users may be unable to utilize spell check in Microsoft Teams desktop client.
Current status: We're reviewing Microsoft Teams desktop client logs collected from a subset of users experiencing impact to identify and isolate any errors potentially contributing to impact for further investigation.
Scope of impact: This issue may affect any user utilizing the Microsoft Teams desktop client on Windows devices.
Next update by: Monday, March 16, 2026, at 7:00 PM UTC https://status.dal.ca/service.php?Service=38 2026-03-16 14:18:33 Service Restored

Title: Some users may have experienced issues when accessing their Exchange Online mailbox via one or more connection method
User impact: Users may have experienced errors when accessing their mailbox via multiple Exchange Online connection methods.
More info: Users may have experienced errors or failures when attempting to access their mailbox. Impacted connection methods included, but were not limited to:
- Outlook on the web
- Outlook desktop
- Exchange ActiveSync
- Other Exchange Online connection protocols
Final status: We've confirmed that service has remained healthy for an extended period of time. Our monitoring indicates the issue is no longer occurring for the affected users.
Scope of impact: Impact was specific to some users attempting to access their mailbox via any of the connection methods detailed above.
Start time: Monday, March 16, 2026, at 9:30 AM UTC
End time: Monday, March 16, 2026, at 1:30 PM UTC
Preliminary root cause: An underlying issue involving the supporting network infrastructure resulted in a service availability degradation across the Exchange Online connection methods. We're continuing to investigate to determine the full root cause and will provide more information within the Post-Incident Report.
Next steps:
- We're continuing to examine the underlying circumstances that led to this behavior to understand the root cause.
We'll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days. https://status.dal.ca/service.php?Service=38 2026-03-16 11:58:19 Title: Some users may be unable to access Office.com or the Microsoft 365 Copilot web sign‑in page
User impact: Users may be unable to access Office.com or the Microsoft 365 Copilot web sign‑in page.
More info: The impacted Microsoft 365 Copilot web-clients are office.com/chat and m365.cloud.microsoft/chat.
Users can access Microsoft Copilot through application-based Microsoft Copilot services. This includes, but is not limited to:
- Microsoft Copilot desktop app
- Copilot in Microsoft Teams
- Copilot in Office apps
Current status: We've identified that a section of service infrastructure is not processing traffic efficiently. We're making configuration changes to remediate impact.
Scope of impact:: Impact is specific to some users who are served through the affected infrastructure.
Next update by: Monday, March 16, 2026, at 4:30 PM UTC https://status.dal.ca/service.php?Service=38 2026-03-16 11:18:44 Title: Some users may experience issues when accessing their Exchange Online mailbox via one or more connection method
User impact: Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods.
More info: Users may experience errors or failures when attempting to accessing their mailbox.
Impacted connection methods include but may not be limited to:
- Outlook on the web
Current status: We’ve identified a backend issue that’s preventing some services from responding as expected, resulting in mailbox access delays. We’re investigating this behavior across regions to better understand the impact and determine next steps. We’re seeing signs of service recovery and will share additional updates as our investigation continues.
Scope of impact: Impact is specific to some users attempting to access their mailbox via any of the connection methods detailed above.
Next update by: Monday, March 16, 2026, at 3:30 PM UTC https://status.dal.ca/service.php?Service=38 2026-03-16 08:56:21 Title: Users may be unable to create or edit Ownerless Groups policies in Exchange Online
User impact: Users may be unable to create or edit Ownerless Groups policies in Exchange Online.
Final status: We’ve successfully developed and deployed the fix and after our validations have confirmed that impact is resolved.
Scope of impact: Users attempting to create or update Ownerless Groups policies in Exchange Online were impacted.
Start time: Thursday, February 12, 2026, at 3:33 PM UTC
End time: Monday, March 16, 2026, at 6:30 AM UTC
Root cause: A recent update to the authentication flow is caused the call to DSAPI to update Ownerless Groups policies to fail due to outdated authentication flow mapping, resulting in the impact.
Next steps:
- We're reviewing our update procedures to better identify similar issues during our development and testing cycles
This is the final update for this event. https://status.dal.ca/service.php?Service=39 2026-03-16 08:53:55 Title: Some users may not see descriptions of Microsoft Teams webinars on the public registration page
User impact: Users may not see descriptions of Microsoft Teams webinars on the public registration page.
Final status: The roll back to the previous stable build has completed, and we've confirmed that this has remediated the impact which was caused by the regression introduced in the update to the process by which the description is displayed. Affected users may need to refresh their cache to receive the mitigation.
Scope of impact: Some users attempting to see the descriptions of Microsoft Teams webinars on the public registration page may have been impacted.
Start time: Thursday, March 12, 2026, at 10:00 AM UTC
End time: Friday, March 13, 2026, at 5:50 PM UTC
Root cause: An update to the process by which the description is displayed has introduced a regression which resulted in the impact.
Next steps:
- We're reviewing our update procedures to ensure similar issues are caught and addressed ahead of deployment to prevent this from happening again.
This is the final update for the event. https://status.dal.ca/service.php?Service=17 2026-03-15 13:27:53 Network maintenance has been completed successfully. All network services operating normally. https://status.dal.ca/service.php?Service=9 2026-03-15 13:27:16 Network maintenance has been completed successfully. All network services operating normally. https://status.dal.ca/service.php?Service=17 2026-03-15 09:33:10 Maintenance being performed on the Dalhousie network between 5:00-9:00AM on Sunday March 15th is taking longer than anticipated. This necessary maintenance work will continue until complete, with an ETA of before 1200h Noon. Impact can be expected to be a couple of very brief network outages, lasting less than 3 minutes between 0900-1200h affecting both the wired and wireless (Dalhousie and Eduroam).

Dalhousie student residence WIFI will be unaffected. https://status.dal.ca/service.php?Service=9 2026-03-15 09:32:56 Maintenance being performed on the Dalhousie network between 5:00-9:00AM on Sunday March 15th is taking longer than anticipated. This necessary maintenance work will continue until complete, with an ETA of before 1200h Noon. Impact can be expected to be a couple of very brief network outages, lasting less than 3 minutes between 0900-1200h affecting both the wired and wireless (Dalhousie and Eduroam).

Dalhousie student residence WIFI will be unaffected. https://status.dal.ca/service.php?Service=9 2026-03-13 10:31:19 Maintenance will be performed on the Dalhousie network between 5:00-9:00AM on Sunday March 15th. The maintenance will impact both the wired and wireless (Dalhousie and Eduroam), as well as remote access to campus or DalVPN. Dalhousie student residence WIFI will be unaffected. https://status.dal.ca/service.php?Service=17 2026-03-13 10:32:09 Maintenance will be performed on the Dalhousie network between 5:00-9:00AM on Sunday March 15th. The maintenance will impact both the wired and wireless (Dalhousie and Eduroam), as well as remote access to campus or DalVPN. Dalhousie student residence WIFI will be unaffected. https://status.dal.ca/service.php?Service=39 2026-03-13 15:36:49 Title: Some users may not see descriptions of Microsoft Teams webinars on the public registration page
User impact: Users may not see descriptions of Microsoft Teams webinars on the public registration page.
Current status: We're monitoring as the roll back to the previous stable build progresses, and we'll provide a timeline for this to complete as one becomes available. We suspect that an update to the process by which the description is displayed has introduced a regression, and rolling back to the previous build will help in confirming this theory.
Scope of impact: Some users attempting to see the descriptions of Microsoft Teams webinars on the public registration page may be impacted.
Next update by: Friday, March 13, 2026, at 8:00 PM UTC https://status.dal.ca/service.php?Service=21 2026-03-11 07:28:08 Title: Some users may be unable to access the My Templates add-in in Exchange Online
User impact: Users may be unable to access the My Templates add-in in Exchange Online.
More info: Users may be unable to access the My Templates and Viva Insights add-ins as they're missing from the Outlook desktop client, Outlook mobile, and Outlook on the web.
Current status: We've expanded communications to all potentially affected users and have updated the "Title", "User impact", "More info" and "Scope of impact" to reflect this change. After completing an analysis of HAR logs, we've isolated a potential code mismatch in the recent authentication change which needs to be corrected to remediate impact. We've created a code change and are deploying it to a subset of service infrastructure to test for impact remediation prior to initiating further deployment.
Scope of impact: This incident may affect some users attempting to access the My Templates and Viva Insights add-ins through the Outlook desktop client, Outlook mobile, and Outlook on the web. This section may be updated as our investigation continues.
Start time: Wednesday, January 21, 2026, at 10:27 AM UTC
Root cause: A recent authentication change intended to improve the My Templates and Viva Insights add-in functionality is causing access issues.
Next update by: Wednesday, March 11, 2026, at 8:30 PM UTC https://status.dal.ca/service.php?Service=39 2026-03-11 07:23:24 Title: Some users may be intermittently unable to create or join meetings or live events in any Microsoft Teams app
User impact: Users may be intermittently unable to create or join meetings or live events in any Microsoft Teams app.
More info: Due to the intermittent nature of the issue, subsequent create or join attempts may have been successful.
Final status: While we were in the process of analyzing the failures, system monitoring indicated that the service had returned to normal health. We've confirmed that the issue is no longer occurring and we'll continue to monitor the service to ensure that the problem doesn't happen again.
Scope of impact: Some users in North America and Canada attempting to create or join meetings or live events in any Microsoft Teams app may have been impacted.
Start time: Tuesday, March 10, 2026, at 1:00 PM UTC
End time: Tuesday, March 10, 2026, at 4:01 PM UTC
Root cause: An unexpected increase in create and join request traffic caused some requests to fail and resulted in the impact.
Next steps:
- We're continuing our analysis of the requests during the impact window to determine what caused the increase in traffic so we can ensure our infrastructure is adequately bolstered to manage future traffic patterns and prevent this issue from reoccurring.
This is the final update for the event. https://status.dal.ca/service.php?Service=17 2026-03-10 16:38:04 Network disruptions have been resolved. https://status.dal.ca/service.php?Service=9 2026-03-10 16:37:47 Network disruptions have been resolved. https://status.dal.ca/service.php?Service=9 2026-03-10 16:15:38 Network disruptions affecting on campus and VPN connections.
Internet provider is investigating. https://status.dal.ca/service.php?Service=17 2026-03-10 16:15:25 Network disruptions affecting on campus and VPN connections.
Internet provider is investigating. https://status.dal.ca/service.php?Service=39 2026-03-10 13:17:04 Title: Microsoft Teams audio and video quality issues
User impact: Users may have experienced poor audio and video quality when using Microsoft Teams.
Final status: We've monitored the service following our corrective action and through the next anticipated uptick in traffic and confirmed that the issue is remediated.
Scope of impact: The issue was specific to the North America region, and the impact occurred primarily during the period of time at the start of the hour and half-past the hour.
Start time: Tuesday, March 10, 2026, at 1:30 PM UTC
End time: Tuesday, March 10, 2026, at 3:10 PM UTC
Preliminary Root Cause: A portion of networking infrastructure was not handling traffic as expected, resulting in networking congestion on the remining infrastructure when the peak of calling/meetings occur at the start of the hour and half-past the hour. We'll provide more details within the PIR.
Next steps:
- We're investigating why a portion of the network infrastructure was not handling traffic as expected.
We'll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days. https://status.dal.ca/service.php?Service=39 2026-03-10 13:15:40 Title: Microsoft Teams audio and video quality issues
User impact: Users may experience poor audio and video quality when using Microsoft Teams.
Current status: We've received multiple reports of impact and monitoring alerts have triggered. We're reviewing relevant telemetry systems and error logs to determine the cause of the issue.
Scope of impact: Reports of impact have been from the North American region. We'll update this field once the full scope is identified.
Next update by: Tuesday, March 10, 2026, at 4:00 PM UTC https://status.dal.ca/service.php?Service=6 2026-03-09 07:40:43 Title: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online
User impact: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online.
Current status: We're investigating a potential issue and are analyzing service telemetry to help us identify the root cause.
Scope of impact: Your organization is affected by this event, and some users attempting to access app entitlement APIs within Exchange Online may be impacted.
Next update by: Monday, March 9, 2026, at 11:00 AM UTC https://status.dal.ca/service.php?Service=6 2026-03-09 07:22:55 Title: Users' auto-decline meeting settings for automatic replies may not be working in Exchange Online
User impact: Users' auto-decline meeting settings for automatic replies may have not been working in Exchange Online.
Final status: We've completed the deployment of our code fix and confirmed it has saturated throughout the affected environment, remediating impact for all users.
Scope of impact: Users with automatic replies set up to auto-decline meeting invites in Exchange Online may have been impacted.
Start time: Monday, February 23, 2026, at 8:00 AM UTC
End time: Friday, March 6, 2026, at 6:00 PM UTC
Root cause: A latent code issue triggered by a recent service configuration update was resulting in impact.
Next steps:
- We're reviewing our update testing and validation procedures to identify opportunities to better detect impact and prevent similar future occurrences.
This is the final update for the event. https://status.dal.ca/service.php?Service=38 2026-03-06 14:49:07 Title: Some users in the North American region may have been unable to access multiple Microsoft 365 services
User impact: Users in the North American region may have been unable to access multiple Microsoft 365 services.
More info: Impacted services included, but were not limited to:
- Microsoft 365 admin center
- SharePoint Online
- Microsoft Teams
Final status: We've received additional reports that the issue has recovered, and telemetry that monitors CDN interactions has shown there is no longer impact. We've confirmed that a CDN endpoint became unavailable for a period of time and the cause of this is still under investigation. Our automated recovery features should have mitigated the issue without intervention by failing traffic to an alternate CDN endpoint, however, this did not occur and resulted in extended impact. We’re continuing to examine the underlying circumstances that led to this behavior to enhance the resiliency of our services.
Scope of impact: Impact was specific to some users located in the North American region attempting to access the Microsoft 365 admin center, Microsoft Teams and SharePoint Online.
Start time: Friday, March 6, 2026, at 1:00 PM UTC
End time: Friday, March 6, 2026, at 4:55 PM UTC
Next steps:
- We're investigating the automated recovery features to understand why it did they not perform as expected.
- We're reviewing CDN infrastructure to identify why the endpoint became unavailable.
We'll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days. https://status.dal.ca/service.php?Service=6 2026-03-05 09:32:12 Title: Users may be unable to create or edit Ownerless Groups policies in Exchange Online

Current status: Our provider has determined that a recent update to the authentication flow is causing the call to the Directory Services API (DSAPI) to update Ownerless Groups policies to fail due to outdated authentication flow mapping, resulting in the impact. We're deploying a solution to update the flow mapping for this call and we'll provide a timeline for remediation as one becomes available.

Scope of impact: Users attempting to create or update Ownerless Groups policies in Exchange Online may be impacted. This section may be updated as our investigation continues.

Root cause: A recent update to the authentication flow is causing the call to DSAPI to update Ownerless Groups policies to fail due to outdated authentication flow mapping, resulting in the impact.
Next update by: Tuesday, March 10, 2026, at 3:30 AM AST https://status.dal.ca/service.php?Service=36 2026-03-05 09:28:41 Update Information: Correction: Sorry had typo the date. This work has been rescheduled to 05 March.

Due to unforeseen delay, this work has been rescheduled to 05 March from 26 February. Sorry for any inconvenience this may have caused.

Customer: Dalhousie

Change Control ID : 2162940

Start Date: 2026-03-05

End Date: 2026-03-05

Country: Canada

Location Of Work: Cape Ray, NL

Reason For Work: Hardware Replacement

Release Window (24 hr format): 00:00 - 06:00 Newfoundland

Affected Circuits:
00144649 - Dalhousie 10Gig - UPEI Vet College - MUN St John's, NL <> UPEI Charlottetown, PE

Service Impact: Your services will be impacted while we do hardware replacement of a core network device. https://status.dal.ca/service.php?Service=9 2026-03-10 16:13:31 CHANGE CONTROL NOTICE

Type Of Work: Maintenance

Customer: Dalhousie

Change Control ID : 2162940

Start Date (yyyy-mm-dd): 2026-03-05
End Date (yyyy-mm-dd): 2026-03-05

Location Of Work: Cape Ray, NL

Reason For Work: Hardware Replacement

Release Window (24 hr format): 00:30 - 06:30 AST

Affected Circuits:
00144649 - Dalhousie 10Gig - UPEI Vet College - MUN St John's, NL <> UPEI Charlottetown, PE

Service Interruption Duration: 3 hours

Service Impact:
Your services will be impacted while the service provider does hardware replacement of a core network device. https://status.dal.ca/service.php?Service=30 2026-03-04 12:06:27 Infosilem Suite will need to be restarted as the system is experiencing system wide instability.

The outage should last between 10-15 minutes.

We apologize for any inconvenience this may cause. https://status.dal.ca/service.php?Service=9 2026-03-04 10:05:13 Change Control Completion Notice

Update Information: Due to unforeseen delay, this work has been rescheduled to 04 March from 25 February. Sorry for any inconvenience this may have caused.

Customer: Dalhousie

Change Control ID : 2162937

Start Date: 2026-03-04

End Date: 2026-03-04

Country: Canada

Location Of Work: Stephenville - NL

Reason For Work: Hardware Replacement

Release Window (24 hr format): 00:00 - 06:00 Newfoundland

Affected Circuits:
00144649 - Dalhousie 10Gig - UPEI Vet College - MUN St John's, NL <> UPEI Charlottetown, PE

Service Impact: Your services will be impacted while we do hardware replacement of a core network device. https://status.dal.ca/service.php?Service=39 2026-03-04 09:57:09 User impact: Users may not have had permissions for Teams meeting notes if notes were enabled after the meeting creation.

More info: More info: This issue only occurred in organizations where admins enabled the ability for users to share links with "Specific People" in OneDrive and SharePoint Online as the meeting notes were hosted there.

When users added meeting notes from the Teams Calendar to a meeting that had already been created, the meeting participants may have not been granted permissions to view the notes, while the user that added the notes may have been able to access them as expected.
Final status: We've confirmed that the fix has finished deploying and is present in all previously affected environments. This issue is now mitigated and service is restored.

Scope of impact: Users scheduled in Teams meetings where meeting notes were enabled after the meeting and in organizations where admins have enabled the ability for users to share links with "Specific People" may have been affected.

Start time: Thursday, November 20, 2025, at 9:00 PM AST
End time: Monday, March 2, 2026, at 1:00 PM AST https://status.dal.ca/service.php?Service=9 2026-01-29 09:15:52 CHANGE CONTROL NOTICE

Type Of Work: Project

Customer: Dalhousie

Change Control ID : 2162937

Start Date (yyyy-mm-dd): 2026-03-04
End Date (yyyy-mm-dd): 2026-03-04

Location Of Work: Stephenville - NL

Reason For Work: Hardware Replacement

Release Window (24 hr format): 00:30 - 06:30 AST

Affected Circuits:
00144649 - Dalhousie 10Gig - UPEI Vet College - MUN St John's, NL <> UPEI Charlottetown, PE

Service Interruption Duration: 3 hours

Service Impact:
Your services will be impacted while the service provider does hardware replacement of a core network device. https://status.dal.ca/service.php?Service=36 2026-03-03 11:22:47 Provider New Change Control Notice

Type Of Work: Maintenance

Customer: ACORN NS

Change Control ID : 2211362

Start Date (yyyy-mm-dd): 2026-03-19

End Date (yyyy-mm-dd): 2026-03-19

Country: Canada

Location Of Work: Halifax, NS

Reason For Work: Network Testing/Maintenance

Release Window (24 hr format): 00:00 - 06:00 Atlantic

Affected Circuits:
acorn-amhr-1.acorn.mns.eastlink.ca
acorn-blby-1.acorn.mns.eastlink.ca
acorn-hfxw-1.acorn.mns.eastlink.ca
acorn-kdc-1.acorn.mns.eastlink.ca
acorn-nwgl-1.acorn.mns.eastlink.ca
acorn-nwmn-1.acorn.mns.eastlink.ca
acorn-pnnt-1.acorn.mns.eastlink.ca
acorn-sdc-1.acorn.mns.eastlink.ca
acorn-sydn-1.acorn.mns.eastlink.ca
acorn-trur-1.acorn.mns.eastlink.ca
acorn-wdsr-1.acorn.mns.eastlink.ca
acorn-yrmo-1.acorn.mns.eastlink.ca
acorn-ytwr-1.acorn.mns.eastlink.ca

Service Interruption Duration: less than 20 minute

Service Impact:
Your services will be impacted, one at a time, will we perform Software Upgrades. https://status.dal.ca/service.php?Service=38 2026-03-03 11:10:05 Title: Users in Australia may be unable to access various M365 Apps or services from portal.office.com

More info: This issue affected users accessing apps or services from portal.office.com and m365.cloud.microsoft.com.
Final status: We've confirmed with a subset of reporting users, as well as our internal telemetry that service health is stable and impact has been remediated.
Scope of impact: Users in Australia attempting to access or use Microsoft 365 Apps and services may have been impacted.
Start time: Sunday, March 1, 2026, at 6:30 PM AST
End time: Monday, March 2, 2026, at 11:30 PM AST https://status.dal.ca/service.php?Service=38 2026-03-03 11:07:11 Title: Users in Australia may be unable to access various M365 Apps or services from portal.office.com

User impact: Users may be unable to access various M365 Apps or services from portal.office.com.
More info: This issue affects users accessing apps or services from portal.office.com and m365.cloud.microsoft.com.

Current status: We've received reports indicating that users are unable to access Microsoft 365 Apps and services when attempting to access them from portal.office.com or m365.cloud.microsoft.com. We're reviewing the provided impact details and investigating service health telemetry to help contextualize the impact and inform our next troubleshooting steps.
Scope of impact: Users in Australia attempting to access or use M365 Apps and services may be impacted. This section may be updated as our investigation continues.
Next update by: Monday, March 2, 2026, at 10:30 AM AST https://status.dal.ca/service.php?Service=39 2026-03-03 08:34:26 Title: Users may be unable to reach agents through Dial-by-Extension for some auto attendants in Microsoft Teams
User impact: Users may have been unable to reach agents through Dial-by-Extension for some auto attendants in Microsoft Teams.
More info: Users may have heard the greeting, followed by approximately 15 seconds of silence, then they may have received the error message: “Sorry, I couldn’t help.”
Final status: Further review determined that the recent service update caused a portion of the supporting Microsoft Teams service infrastructure to operate in a suboptimal state due to high CPU and memory constraint issues, resulting in impact. We've completed rolling back the offending service update, and confirmed through testing with a subset of affected users, as well as through monitoring service health telemetry that the impact has been remediated.
Scope of impact: Any users attempting to reach agents through Dial-by-Extension for some auto attendants in Microsoft Teams may have been impacted.
Start time: Thursday, February 19, 2026, at 5:00 AM UTC
End time: Saturday, February 28, 2026, at 6:30 PM UTC
Root cause: A recent service update caused a portion of the supporting Microsoft Teams service infrastructure to operate in a suboptimal state due to high CPU and memory constraint issues, resulting in impact.
Next steps:
- We're reviewing our update procedures to understand why impact to auto attendant functionality wasn't caught during the testing phase. This will allow us to drive service improvements by proactively identifying similar issues in the future and improve our update testing processes.
This is the final update for the event. https://status.dal.ca/service.php?Service=39 2026-03-03 07:41:13 Title: Users may have seen autogenerated chats during Public Switched Telephone Network (PSTN) calls in Microsoft Teams
User impact: Users may have seen autogenerated chats during PSTN calls, Call Queues or Auto Attendant calls in Microsoft Teams.
More info: When placing outbound PSTN calls or receiving inbound PSTN calls, users may have seen a chat thread autogenerate in the Microsoft Teams desktop client and web app. This may have also affected Call Queue and Auto Attendant calls.
Final status: We've confirmed with a subset of users that impact has been full resolved.
Scope of impact: Any user interacting with PSTN calling scenarios in Microsoft Teams may have been impacted.
Start time: Tuesday, February 10, 2026, at 10:37 AM UTC
End time: Friday, February 27, 2026, at 7:52 PM UTC
Root cause: A code issue in a recent deployment to the Microsoft Teams calling service introduced a compatibility complication between the affected calling scenarios and chats, which was causing chat threads to unexpectedly autogenerate in the Microsoft Teams desktop client and web app.
Next steps:
- We're reviewing our update procedures to better identify similar issues during our development and testing cycles.
This is the final update for the event. https://status.dal.ca/service.php?Service=6 2026-03-02 16:27:51 Title: Some users may have been unable to access the Exchange admin center (EAC)

Final status: We've identified that a section of networking infrastructure was performing below acceptable performance thresholds and resulting in impact. We've applied traffic and performance optimizations which has remediated impact.

Scope of impact: Impact was specific to some users who were served through the affected infrastructure attempting to access the EAC.

Start time: Monday, March 2, 2026, at 5:20 AM UTC
End time: Monday, March 2, 2026, at 9:53 AM UTC
Root cause: A section of networking infrastructure was performing below acceptable performance thresholds and resulting in impact. https://status.dal.ca/service.php?Service=6 2026-03-02 16:26:11 Title: Some users may be unable to access the Exchange admin center (EAC)

Current status: We're reviewing service monitoring telemetry to isolate the root cause and develop a remediation plan.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure attempting to access the EAC.
Next update by: Monday, March 2, 2026, at 8:30 AM UTC https://status.dal.ca/service.php?Service=21 2026-02-27 07:51:23 Title: Some users may be unable to open some SharePoint Online list links through Microsoft Teams on iOS and receive an error
User impact: Users may have been unable to open some SharePoint Online list links through Microsoft Teams on iOS and received an error.
More info: Specifically, users who attempted to access SharePoint lists through Teams on iOS may have received an access permissions error stating: "Permission required - You do not have permission to open this file."
While we were focused on remediation, users on iOS could’ve accessed the affected pages and list links by manually copying the impacted URLs from the Teams chat to open them elsewhere. Additionally, users with access to alternative Microsoft Teams access methods such as the Microsoft Teams desktop client and web app could’ve used these to avoid impact.
Final status: Our update containing the fix has completed deploying to the entirety of the affected infrastructure and we’ve confirmed through internal testing that the issue is resolved.
Scope of impact: Any users who attempted to access SharePoint lists through links shared on Microsoft Teams while on iOS may have been impacted.
Start time: Friday, December 12, 2025, at 3:10 AM UTC
End time: Thursday, February 26, 2026, at 1:30 AM UTC
Root cause: A latent code issue was affecting the request flow leveraged for SharePoint Online list link access within Microsoft Teams on iOS and resulted in impact.
Next steps:
- We're investigating further into the latent code issue to better understand how it was introduced and why it wasn't caught prior sooner so that we can prevent impact to SharePoint Online list links through Microsoft Teams on iOS in the future.
This is the final update for the event. https://status.dal.ca/service.php?Service=8 2026-02-26 11:02:10 The issue with SSPR appears to have been a false alarm. https://status.dal.ca/service.php?Service=8 2026-02-25 17:08:07 Self-service password resets are currently not working properly from the Dalhousie Campus networks, including Dalhousie VPN and Dalhousie Wireless. As a work-around, please use an alternate network such as from mobile data or a home internet service provider network.

Technicians are investigating. https://status.dal.ca/service.php?Service=9 2026-02-25 07:47:00 Eastlink Change Control Completion Notice


Customer: Dalhousie

Change Control ID : 2191166

Start Date: 2026-02-25

End Date: 2026-02-25

Country: Canada

Location Of Work: Pennant Point Data Centre, Sambro Creek, NS

Reason For Work: Blue UPS Power Module Rebuild

Release Window (24 hr format): 00:01 - 08:00 Atlantic

Affected Circuits:
Blue Power - Eastlink co-location/data centre Pennant Point at 233 Sambro Creek Rd,Sambro Creek NS

Service Impact: BLUE Power at Pennant Point will be under threat while it's on maintenance by-pass as the load will be on generator, and there will be no battery backup during this work. YELLOW Power will be unaffected.


Should you have any questions about this notice
please contact Eastlink Change Control at change@corp.eastlink.ca
Contact Number: 877-797-7799 option 4 https://status.dal.ca/service.php?Service=9 2026-02-25 07:45:52 Eastlink Change Control Completion Notice


Customer: Dalhousie

Change Control ID : 2196892

Start Date: 2026-02-25

End Date: 2026-02-25

Country: Canada

Location Of Work: Halifax, NS

Reason For Work: Software upgrade

Release Window (24 hr format): 04:00 - 06:00 Atlantic

Affected Circuits:
DAL residence with Internet/Wifi/TV Services

Service Impact: Your services will be impacted while we do a software upgrade.


Should you have any questions about this notice
please contact Eastlink Change Control at change@corp.eastlink.ca
Contact Number: 877-797-7799 option 4 https://status.dal.ca/service.php?Service=39 2026-02-25 07:30:12 Service Degradation

Impacted services

Microsoft Teams

Details

Title: Users see autogenerated chats during Public Switched Telephone Network (PSTN) calling scenarios in Microsoft Teams
User impact: Users see autogenerated chats during PSTN calling scenarios and Call Queue or Auto Attendant calls in Microsoft Teams.
More info: When placing outbound PSTN calls or receiving inbound PSTN calls, users see a chat thread autogenerated in the Microsoft Teams desktop client and web app. This also affects Call Queue and Auto Attendant calls.
Current status: We've collected logs from our reproduction of impact indicating which component is causing this issue and are investigating if any potential recent changes may be contributing to impact.
Scope of impact: Users may see autogenerated chats during PSTN calling scenarios and Call Queue or Auto Attendant calls in Microsoft Teams. This section may be updated as our investigation continues.
Next update by: Wednesday, February 25, 2026, at 4:00 AM UTC https://status.dal.ca/service.php?Service=9 2026-02-04 11:49:51 CHANGE CONTROL NOTICE

Type Of Work: Maintenance

Customer: Dalhousie

Change Control ID : 2191166

Start Date (yyyy-mm-dd): 2026-02-25
End Date (yyyy-mm-dd): 2026-02-25

Location Of Work: Pennant Point Data Centre, Sambro Creek, NS

Reason For Work: Blue UPS Power Module Rebuild

Release Window (24 hr format): 00:01 - 08:00 Atlantic

Affected Circuits:
Blue Power - Eastlink co-location/data centre Pennant Point at 233 Sambro Creek Rd,Sambro Creek NS

Service Interruption Duration: Network Threat - NonService Affecting

Service Impact:
BLUE Power at Pennant Point will be under threat while it's on maintenance by-pass as the load will be on generator, and there will be no battery backup during this work. YELLOW Power will be unaffected.