https://status.dal.ca/ RSS feed of the Dalhousie Status Page updates. en-ca Thu, 2 Jul 2026 11:18:28 America/Halifax Copyright 2017 Dalhousie University. https://status.dal.ca/rss.php https://status.dal.ca/service.php?Service=25 2026-07-02 09:37:54 ojs.library.dal.ca is accessible on campus/vpn only. https://status.dal.ca/service.php?Service=39 2026-07-02 08:46:52 Active Issues:

- Users may not receive the join option in Teams iOS for meetings or calls active on another device.

- Users may be unable to schedule Microsoft Teams meetings through the classic Outlook desktop software. https://status.dal.ca/service.php?Service=38 2026-07-02 08:56:53 Active Issues:

Copilot/SharePoint:
- Users may be unable to view SharePoint Online files that are linked by Copilot Chat or Copilot agents. When users select the link to a SharePoint Online file that has been provided by Copilot Chat or Copilot agents, they receive an error that says, "We couldn't show the file."

Copilot:
- Users may be unable to generate content through the Microsoft 365 Copilot Create web app. Users with access to the Copilot desktop app may use the Create feature there to bypass the impact.


Resolved Issue:

- Users may have been unable to access sign-out button or account details across multiple Microsoft 365 web services. Affected Microsoft 365 services on the web included but weren't limited to Outlook on the web, OneDrive web, and SharePoint Online web where users may have been unable to access the account drop-down in the top right of the web client, preventing them from accessing the sign-out button and account details in this location. https://status.dal.ca/service.php?Service=21 2026-07-02 08:41:49 Users may be unable to view SharePoint Online files that are linked by Copilot Chat or Copilot agents. When users select the link to a SharePoint Online file that has been provided by Copilot Chat or Copilot agents, they receive an error that says, "We couldn't show the file." https://status.dal.ca/service.php?Service=8 2026-07-02 08:13:21 Impacted servicesMicrosoft Copilot (Microsoft 365)







DetailsTitle: We're looking into a potential problem impacting Microsoft 365 Copilot

User impact: We're checking for potential impact to your users. https://status.dal.ca/service.php?Service=8 2026-06-30 15:55:16 DetailsTitle: Some users may be unable to leverage the Microsoft 365 Copilot rewrite feature in classic Outlook

User impact: Users may have been unable to leverage the Copilot rewrite feature in classic Outlook.

More info: Copilot rewrite feature functionality works as expected in Outlook on the web and new Outlook.

When affected users select text and use the Copilot rewrite option in classic Outlook, they may have encountered the following error message, "Sorry, something went wrong. Copilot is working on it."

Final status: We've confirmed that the fix has completed deployment and validated this issue has been remediated with affected users.

Scope of impact: Impact was specific to some users of the Copilot rewrite feature in classic Outlook.

Start time: Monday, May 25, 2026, at 3:56 PM UTC

End time: Monday, June 29, 2026, at 11:17 PM UTC

Root cause: A dependency introduced in a recent deployment caused the rewrite feature requests to fail.

Next steps:

- We're continuing our analysis of provided client captures and of the recent deployment to better understand the underlying cause of impact and prevent similar impact in the future.

This is the final update for this event. https://status.dal.ca/service.php?Service=38 2026-06-30 09:46:03 Some users may not see the search bar or features when creating Microsoft 365 Copilot notebooks on the desktop client

User impact: Users may not see the search bar or features when creating Copilot notebooks on the desktop client.

More info: Impact is specific to the Mac and Windows desktop clients. https://status.dal.ca/service.php?Service=38 2026-06-30 09:45:15 Users may be unable to view SharePoint Online files that are linked by Microsoft 365 Copilot Chat or Copilot agents

User impact: Users may be unable to view SharePoint Online files that are linked by Copilot Chat or Copilot agents. https://status.dal.ca/service.php?Service=41 2026-06-30 08:51:14 Service has resumed. https://status.dal.ca/service.php?Service=41 2026-06-30 08:37:44 Service is down. We are investigating https://status.dal.ca/service.php?Service=8 2026-06-29 13:54:53 StatusService Restored

Impacted servicesMicrosoft 365 Copilot Chat


DetailsTitle: Users had access to scheduled prompts in 365 Copilot Chat when they shouldn't have

User impact: Users had access to scheduled prompts in Copilot Chat when they shouldn't have.

Current status: We identified that an update to a related service incorrectly allowed access to the paid service feature of scheduled prompts for users without an add-on Copilot license in Copilot Chat. A fix was applied to the service to correct this by changing the scope of users allowed to see the feature. This change removed the scheduled prompts feature from Microsoft 365 Copilot chat users.

Scope of impact: Users without an add-on Copilot license had access to scheduled prompts in Copilot Chat when they shouldn't have. https://status.dal.ca/service.php?Service=8 2026-06-29 08:44:31 DetailsTitle: Users may be unable to sign into Microsoft Teams Rooms (MTR) on Windows devices

User impact: Users may have been unable to sign into MTR on Windows devices.

Final status: After we reverted the impacting change and monitored the affected infrastructure, we validated with a subset of affected users and service side telemetry that impact was resolved by our actions.

Scope of impact: Users who attempted to sign into MTR on Windows devices may have been impacted by this issue.

Start time: Friday, June 26, 2026, at 6:42 PM UTC

End time: Sunday, June 28, 2026, at 4:02 AM UTC

Root cause: A recent service side change related to Microsoft Teams Rooms devices caused impact. https://status.dal.ca/service.php?Service=8 2026-06-29 08:43:36 StatusService Degradation








Impacted servicesMicrosoft Teams








DetailsTitle: Users may be unable sign into Microsoft Teams Rooms (MTR) devices

User impact: Users may be unable to sign into MTR devices.

Current status: We've received support cases indicating that users may be unable to sign into multiple Microsoft Teams Rooms devices. We're investigating Microsoft Teams Rooms client logs and our service metrics to gain an understanding of why impact may be occurring.

Scope of impact: Users attempting to sign into MTR devices may be impacted by this issue. This section may be updated as our investigation continues. https://status.dal.ca/service.php?Service=21 2026-06-26 12:22:58 Resolved:

Users may have been unable to access or experience degraded performance when using SharePoint Online or OneDrive. https://status.dal.ca/service.php?Service=40 2026-06-26 12:22:41 Resolved:

Users may have been unable to access or experience degraded performance when using SharePoint Online or OneDrive. https://status.dal.ca/service.php?Service=40 2026-06-26 11:21:31 Users may be unable to access or experienced degraded performance when using SharePoint Online or OneDrive. https://status.dal.ca/service.php?Service=21 2026-06-26 11:21:16 Users may be unable to access or experienced degraded performance when using SharePoint Online or OneDrive. https://status.dal.ca/service.php?Service=39 2026-06-24 13:54:14 Users may be unable to schedule Microsoft Teams meetings through the classic Outlook desktop software. https://status.dal.ca/service.php?Service=13 2026-06-21 14:14:52 The PROD database and associated applications will be unavailable on Sunday June 21st from 6:00 a.m. to 6:00 p.m. for planned system maintenance. https://status.dal.ca/service.php?Service=36 2026-06-19 08:33:47 Eastlink Change Control Completion Notice

Customer: Canary NOC

Change Control ID : 2267092

Start Date: 2026-06-19

End Date: 2026-06-19

Country: Canada

Location Of Work: Halifax - NS

Reason For Work: Network Maintenance

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

Affected Circuits:
00152705 - 10G Canarie Memorial University to Dalhousie

Service Impact: Your services will be impacted while we perform Core Network Maintenance

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

===============================================================================
Thank you for choosing eastlink as your service provider.
EastLink Change Control
Email: Change@corp.eastlink.ca
Contact Number: 877-797-7799 option 4 https://status.dal.ca/service.php?Service=21 2026-06-19 08:28:35 Restored:

- Users may have been unable to access files in Excel for the web opened from SharePoint Online. https://status.dal.ca/service.php?Service=6 2026-06-18 07:41:31 Active Issue:

- Users may see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable.


Resolved Issue:
- Users may have been unable to see the free/busy status of multiple cross-tenant mailboxes in Exchange Online. https://status.dal.ca/service.php?Service=6 2026-06-17 15:37:09 Active Issues:

- Users may see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable.

- Users may be unable to see the free/busy status of multiple cross-tenant mailboxes in Exchange Online. https://status.dal.ca/service.php?Service=43 2026-06-17 15:32:57 Power BI:

- Microsoft reported and resolved an issue where users may have seen blank reports when downloading PBIX files from semantic models within Power BI. This issue is no longer actively occurring, and reports can be downloaded as expected from semantic models within Power BI. Affected users could download full reports for semantic models directly from .pbix files. https://status.dal.ca/service.php?Service=39 2026-06-17 15:14:16 Resolved:

- Users may have been unable to search and add addresses for emergency calling in auto suggest dialog in Microsoft Teams. https://status.dal.ca/service.php?Service=36 2026-06-17 12:11:50 ACORN/ISINet is in the process of deploying a new statistics database and frontend, to replace Cacti. This is being done due to concerns about the future of Cacti, as well as frustrations with Cacti and its (in)ability to gather complicated statistics such as Cisco-style traffic policies. The new implementation is a Grafana frontend with a Prometheus time series database backend. Grafana is far more modern and interactive, and the Prometheus database is non-lossy and has an easier and more predictable stats-gathering protocol.

The Grafana interface is up and running at https://graf.its.dal.ca/ , and uses the existing Dalhousie Active Directory for authentication just as Cacti does. Unfortunately, permissions to access graphs can't be assigned before the user first logs in.

When you have a spare moment, please attempt to log into the Grafana interface with your normal username and password. If the login fails, please let us know roughly when you tried and we'll investigate. If the login succeeds, please remember that there will likely be no visible graphs right away. We will be monitoring new logins on our side and will assign proper permissions as new users appear, so you should be able to see your traffic graphs by the day afterward.

At the moment we are trying to make the new graphs emulate the old Cacti graphs as much as possible, but if you have ideas on how you'd like the data to be presented, feel free to let us know and we'll attempt to make it happen if Grafana is capable of accommodating it.

Please contact brandon.hume@dal.ca if you run into any login problems, or for any customization requests. https://status.dal.ca/service.php?Service=6 2026-06-17 07:58:06 Users may be unable to see the free/busy status of multiple cross-tenant mailboxes in Exchange Online

User impact: Users may be unable to see the free/busy status of multiple cross-tenant mailboxes in Exchange Online.

More info: This impact occurs only when two or more mailbox statuses are requested.

Current status: We've validated that the source of impact was a NetCore deployment, which introduced a regression where headers were being dropped during free/busy status requests for cross-tenant scenarios, resulting in back-end authentication requests failing. Our fix to address the regression is currently at 90 percent saturation in the affected environment, and we've reached out to affected users to begin testing for remediation. https://status.dal.ca/service.php?Service=39 2026-06-17 07:56:17 Users may be unable to search and add addresses for emergency calling in auto suggest dialog in Microsoft Teams

User impact: Users may be unable to search and add addresses for emergency calling in auto suggest dialog in Microsoft Teams.

Current status: We're investigating a potential issue with Microsoft Teams and checking for impact to your organization. We'll provide an update within 30 minutes. https://status.dal.ca/service.php?Service=39 2026-06-16 11:11:11 Resolved Issue:

- Some users in North America may have experienced issues with Microsoft Teams. https://status.dal.ca/service.php?Service=39 2026-06-16 10:53:28 Microsoft is currently investigating an issue where some users in North America may be experiencing issues when using Microsoft Teams. https://status.dal.ca/service.php?Service=12 2026-06-15 14:55:40 Please be advised that there will be a brief power outage on Tuesday June 16th starting at 9am for Trueman/Chapman & 9:30am for Fraser House to disconnect the generators and bring them back onto utility power.

Regards, https://status.dal.ca/service.php?Service=39 2026-06-15 12:05:36 Some users in North America may have experienced issues with Microsoft Teams

User impact: Users in North America may have experienced issues with Microsoft Teams.

Final status: While we were in the process of analysing service monitoring telemetry to isolate the source of the problem, system monitoring indicated that the service had returned to normal health. We've confirmed that the problem is no longer occurring, and we'll continue to monitor the service to ensure that the problem does not happen again. https://status.dal.ca/service.php?Service=6 2026-06-15 08:01:59 Active Issue:

- Users may see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable.


Resolved Issue:
- Users may have been unable to create new online meetings from shared calendar events in Exchange Online. https://status.dal.ca/service.php?Service=38 2026-06-15 07:57:15 Users may be unable to access a recently introduced feature in the Microsoft Copilot Studio Agent Builder

User impact: Users may have been intermittently unable to copy an agent created through the Agent Builder into the full Copilot Studio.

Final status: We've completed deploying our aforementioned targeted fix and confirmed with our service telemetry that this issue is resolved. https://status.dal.ca/service.php?Service=38 2026-06-15 07:56:05 Users are unable to submit a prompt in Microsoft 365 Copilot Chat and receive an error message

User impact: Users are unable to submit a prompt in Microsoft 365 Copilot Chat and receive an error message.

More info: Microsoft 365 Copilot Chat returns the following error message "Something went wrong." for users when they submit a prompt.

Current status: While we continue to analyze the newly obtained HTTP Archive format (HAR) logs, we’ve identified a specific failure from service side telemetry and are looking into this further to determine the next steps required. https://status.dal.ca/service.php?Service=38 2026-06-15 07:46:41 Users may not see accurate usage data for Copilot Chat in usage reports within the admin center

User impact: Users may not see accurate usage data for Copilot Chat in usage reports within the admin center.

More info: This issue only affects usage data for unlicensed Copilot Chat users. Users may see lower than expected data reported for unlicensed Copilot Chat users.

Current status: We've determined that the under-reporting of usage data is being caused by a recent upgrade to the functionality of Copilot Chat for unlicensed users, which was not accounted for in current usage logging logic. We're investigating the recent upgrade to determine the next best steps for remediation. https://status.dal.ca/service.php?Service=8 2026-06-12 13:52:44 DetailsTitle: Some users may be unable to create new online meetings from shared calendar events in Exchange Online

User impact: Users may have been unable to create new online meetings from shared calendar events in Exchange Online.

More info: Affected users could create online meetings from their personal calendars as an alternative method, and existing shared calendar events remained unaffected.

Final status: We've confirmed that the fix to address the impact to the authorization component of the calendar service has completed and, after monitoring service health metrics to ensure the associated failures have ceased, we've verified the impact is remediated.

Scope of impact: Impact was specific to some users attempting to create new online meetings from shared calendar events in Exchange Online. https://status.dal.ca/service.php?Service=8 2026-06-12 09:43:21 CAUTION: The Sender of this email is not from within Dalhousie.

Eastlink Change Control Completion Notice

Customer: Canary NOC

Change Control ID : 2263772

Start Date: 2026-06-12

End Date: 2026-06-12

Country: Canada

Location Of Work: Port Hawkesbury - NS

Reason For Work: Forced Relocate

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

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 a Forced Fiber Relocate

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=8 2026-06-12 08:31:15 DetailsTitle: Some users may experience degradation with Microsoft 365 Copilot Chat responses after uploading a file

User impact: Users may have experienced degradation with Copilot Chat responses after uploading a file.

More info: Affected users may have been returned an error message stating, "Oops! Something happened. Can you try again?"

Users reported low-quality or inaccurate responses when Copilot Chat was prompted to respond on content within uploaded files.

Additionally, users who attempted to send a message with file grounding may have received the following response, "I tried to open your file {file name}, but I’m currently unable to retrieve its contents due to an access/activity limit on the file."

Final status: We've completed the scale-out of our configuration change to prevent retries from adding more load during OneDrive or SharePoint Online file uploads. After a period of monitoring for file upload traffic across affected regions, we've confirmed that our actions successfully remediated impact.

Scope of impact: Some users may have experienced degradation with Copilot Chat responses after uploading a file.

Start time: Tuesday, June 9, 2026, at 6:00 AM UTC

End time: Thursday, June 11, 2026, at 6:10 PM UTC

Root cause: Normal growth in Microsoft 365 Copilot Chat usage exceeded the available resources needed to process OneDrive and SharePoint Online file upload requests, causing some requests to process slower or fail.

Next steps:

- We're continuing to monitor previously affected traffic to confirm what additional performance optimizations we can implement to further improve the resiliency of our service to prevent similar impact scenarios from occurring in the future. https://status.dal.ca/service.php?Service=8 2026-06-12 08:30:24 DetailsTitle: Some users may experience degradation with Microsoft 365 Copilot responses after uploading a file

User impact: Users may have experienced degradation with Copilot responses after uploading a file.

More info: Affected users have been returned an error message stating, "Oops! Something happened. Can you try again?"

Affected users have been returned an error message stating, "Oops! Something happened. Can you try again?"

Users reported low-quality responses or hallucinations when Copilot was prompted to respond on content within uploaded files.

Additionally, users who attempted to send a message with file grounding may have received the following response, "I tried to open your file {file name}, but I’m currently unable to retrieve its contents due to an access/activity limit on the file."

Final status: We've completed the scale-out of our configuration change to prevent retries from adding more load during OneDrive or SharePoint Online file uploads. After a period of monitoring for file upload traffic across affected regions, we've confirmed that our actions successfully remediated impact.

Scope of impact: Some users may have experienced degradation with Copilot responses after uploading a file.

Start time: Tuesday, June 9, 2026, at 6:00 AM UTC

End time: Thursday, June 11, 2026, at 6:10 PM UTC

Root cause: Normal growth in Microsoft 365 Copilot usage exceeded the available resources needed to process OneDrive and SharePoint Online file upload requests, causing some requests to process slower or fail.

Next steps:

- We're continuing to monitor previously affected traffic to confirm what additional performance optimizations we can implement to further improve the resiliency of our service to prevent similar impact scenarios from occurring in the future.

This is the final update for the event. https://status.dal.ca/service.php?Service=8 2026-06-12 08:29:21 DetailsTitle: Some users may encounter an error when using the Microsoft 365 Copilot rewrite feature in classic Outlook

User impact: Users may encounter an error when using the Copilot rewrite feature in classic Outlook.

More info: Copilot rewrite feature functionality works as expected in Outlook on the web and new Outlook.

When affected users select text and use the Copilot rewrite option in classic Outlook, they may encounter the following error message, "Sorry, something went wrong. Copilot is working on it."

Current status: We're continuing our analysis of the client telemetry data while comparing service behaviors across client versions to determine if a potential regression in the Outlook client is contributing to the reported impact.

Scope of impact: Impact is specific to some users of the Copilot rewrite feature in classic Outlook. https://status.dal.ca/service.php?Service=8 2026-06-12 08:27:59 DetailsTitle: Users are unable to access Microsoft 365 Copilot Chat or portal.office.com

User impact: Users are unable to access Microsoft 365 Copilot Chat or portal.office.com.

More info: Admins may be able to access the Microsoft 365 admin center via admin.cloud.microsoft as a temporary solution. Additionally, Copilot in Microsoft Teams is not expected to be impacted and can be leveraged in the interim while we mitigate the issue.

Current status: This is a continuation of a communication posted under CW1387674. We’ve identified an issue with a recent deployment for Microsoft Copilot. We’re reverting to a previous build to remediate impact as soon as possible. We expect this to be completed in the next 30 minutes.

Scope of impact: Our investigation indicates that any user or admin may be affected by this event. This section is subject to change as the investigation continues.

Start time: Thursday, June 11, 2026, at 8:00 PM UTC

Estimated time to resolve: We expect the reversion to be complete in the next 30 minutes.

Root cause: The root cause is still being investigated. We will provide more information in our next update. https://status.dal.ca/service.php?Service=38 2026-06-12 08:13:37 Users are unable to access Microsoft 365 Copilot Chat or portal.office.com

User impact: Users are unable to access Microsoft 365 Copilot Chat or portal.office.com.

More info: Admins may have been able to access the Microsoft 365 admin center via admin.cloud.microsoft as a temporary solution. Additionally, Copilot in Microsoft Teams was not impacted and could have been leveraged in the interim while we mitigated the issue.

Final status: We’ve successfully rolled back the change throughout the affected infrastructure, and we've confirmed with previously affected users that the impact is mitigated. https://status.dal.ca/service.php?Service=8 2026-06-11 13:17:09 DetailsTitle: Some users may encounter an error when using the Microsoft 365 Copilot rewrite feature in classic Outlook

User impact: Users may encounter an error when using the Copilot rewrite feature in classic Outlook.

More info: Copilot rewrite feature functionality works as expected in Outlook on the web and new Outlook.

When affected users select text and use the Copilot rewrite option in classic Outlook, they may encounter the following error message, "Sorry, something went wrong. Copilot is working on it."

Final status: The investigation is complete and we've determined the service is healthy. A service incident didn't actually occur. This communication will expire in 24 hours.

Scope of impact: Impact is specific to some users of the Copilot rewrite feature in classic Outlook. https://status.dal.ca/service.php?Service=8 2026-06-11 11:45:07 DetailsTitle: Some users may encounter an error when using the Copilot rewrite feature in Classic Outlook

User impact: Users may encounter an error when using the Copilot rewrite feature in Classic Outlook.

More info: Copilot rewrite feature functionality works as expected in Outlook on the web and new Outlook.

Affected users when selecting text and using the Copilot rewrite option in Classic Outlook, may encounter the following error message "Sorry, something went wrong. Copilot is working on it."

Current status: We suspect a potential regression in the Outlook client is contributing to the issue and are actively analyzing telemetry data and comparing behaviour across different client versions to determine the source of impact.

Scope of impact: Impact is specific to some users attempting to utilize Copilot rewrite feature in Classic Outlook. https://status.dal.ca/service.php?Service=8 2026-06-11 08:23:08 DetailsTitle: June 9 security update notes aren’t available on learn.microsoft.com for Microsoft 365 apps & Office

User impact: June 9 security update notes aren’t available on learn.microsoft.com for Microsoft 365 apps & Office.

Current status: Current status: Due to an issue with security update and patch note posting on learn.microsoft.com, the security notes for June 9, 2026, Security Updates for Microsoft 365 Apps and Office temporarily aren't available. All security updates have been completed; it is only the notes that aren't available. This post will be removed once those notes are available. The following is a list of the updated builds:

Current Channel: Version 2605 (Build 20026.20168)

Monthly Enterprise Channel: Version 2605 (Build 20026.20166)

Monthly Enterprise Channel: Version 2604 (Build 19929.20220)

Monthly Enterprise Channel: Version 2603 (Build 19822.20288)

Semi-Annual Enterprise Channel: Version 2508 (Build 19127.20678)

Office 2024 Retail: Version 2605 (Build 20026.20168)

Office 2021 Retail: Version 2605 (Build 20026.20168)

Office LTSC 2024 Volume Licensed: Version 2408 (Build 17932.20842)

Office LTSC 2021 Volume Licensed: Version 2108 (Build 14334.20756)

Office 2019 Volume Licensed: Version 1808 (Build 10417.20153)

Security update service specifics:

Word

CVE-2026-45456

CVE-2026-45457

CVE-2026-45458

CVE-2026-45466

CVE-2026-45471

CVE-2026-45486

CVE-2026-45643

CVE-2026-47635

Excel

CVE-2026-44817

CVE-2026-44818

CVE-2026-44820

CVE-2026-44822

CVE-2026-44823

CVE-2026-45455

CVE-2026-45459

CVE-2026-45469

Office suite

CVE-2026-44819

CVE-2026-44821

CVE-2026-44824

CVE-2026-45460

CVE-2026-45461

CVE-2026-45463

CVE-2026-45472

CVE-2026-45473

CVE-2026-45474

CVE-2026-45475

CVE-2026-45485

CVE-2026-45645

CVE-2026-47293

Supported Versions:

Current Channel Version 2605 Build 20026.20168

Monthly Enterprise Channel Version 2605 Build 20026.20166

Monthly Enterprise Channel Version 2604 Build 19929.2022

Monthly Enterprise Channel Version 2603 Build 19822.20288

Semi-Annual Enterprise Channel Version 2508 Build 19127.20678 https://status.dal.ca/service.php?Service=8 2026-06-11 08:22:06 DetailsTitle: Some users may experience degradation with Microsoft 365 Copilot Chat responses after uploading a file

User impact: Users may experience degradation with Copilot Chat responses after uploading a file.

More info: Affected users may be returned an error message stating, "Oops! Something happened. Can you try again?"

Users report low-quality responses or hallucinations when Copilot Chat is prompted to respond on content within uploaded files.

Current status: We're analyzing service telemetry for file upload scenarios for Copilot Chat to isolate when the degradation started and to determine our next troubleshooting steps.

Scope of impact: Some users may experience degradation with Copilot Chat responses after uploading a file. This section may be updated as the investigation progresses https://status.dal.ca/service.php?Service=8 2026-06-11 08:21:05 DetailsTitle: June 9 security update notes aren’t available on learn.microsoft.com for Microsoft 365 apps & Office

User impact: June 9 security update notes aren’t available on learn.microsoft.com for Microsoft 365 apps & Office.

Current status: Current status: Due to an issue with security update and patch note posting on learn.microsoft.com, the security notes for June 9, 2026, Security Updates for Microsoft 365 Apps and Office temporarily aren't available. All security updates have been completed; it is only the notes that aren't available. This post will be removed once those notes are available. The following is a list of the updated builds:

Current Channel: Version 2605 (Build 20026.20168)

Monthly Enterprise Channel: Version 2605 (Build 20026.20166)

Monthly Enterprise Channel: Version 2604 (Build 19929.20220)

Monthly Enterprise Channel: Version 2603 (Build 19822.20288)

Semi-Annual Enterprise Channel: Version 2508 (Build 19127.20678)

Office 2024 Retail: Version 2605 (Build 20026.20168)

Office 2021 Retail: Version 2605 (Build 20026.20168)

Office LTSC 2024 Volume Licensed: Version 2408 (Build 17932.20842)

Office LTSC 2021 Volume Licensed: Version 2108 (Build 14334.20756)

Office 2019 Volume Licensed: Version 1808 (Build 10417.20153)

Security update service specifics:

Word

CVE-2026-45456

CVE-2026-45457

CVE-2026-45458

CVE-2026-45466

CVE-2026-45471

CVE-2026-45486

CVE-2026-45643

CVE-2026-47635

Excel

CVE-2026-44817

CVE-2026-44818

CVE-2026-44820

CVE-2026-44822

CVE-2026-44823

CVE-2026-45455

CVE-2026-45459

CVE-2026-45469

Office suite

CVE-2026-44819

CVE-2026-44821

CVE-2026-44824

CVE-2026-45460

CVE-2026-45461

CVE-2026-45463

CVE-2026-45472

CVE-2026-45473

CVE-2026-45474

CVE-2026-45475

CVE-2026-45485

CVE-2026-45645

CVE-2026-47293

Supported Versions:

Current Channel Version 2605 Build 20026.20168

Monthly Enterprise Channel Version 2605 Build 20026.20166

Monthly Enterprise Channel Version 2604 Build 19929.2022

Monthly Enterprise Channel Version 2603 Build 19822.20288

Semi-Annual Enterprise Channel Version 2508 Build 19127.20678 https://status.dal.ca/service.php?Service=8 2026-06-10 14:33:43 DetailsTitle: Some users may experience degradation with Microsoft 365 Copilot responses after uploading a file

User impact: Users may experience degradation with Copilot responses after uploading a file.

More info: Affected users may be returned an error message stating, "Oops! Something happened. Can you try again?"

Users report low-quality responses or hallucinations when Copilot is prompted to respond on content within uploaded files.

Current status: We're analyzing service telemetry for file upload scenarios for Copilot to isolate when the degradation started and to determine our next troubleshooting steps.

Scope of impact: Some users may experience degradation with Copilot responses after uploading a file. This section may be updated as the investigation progresses. https://status.dal.ca/service.php?Service=8 2026-06-10 14:33:34 DetailsTitle: Some users may experience degradation with Microsoft 365 Copilot responses after uploading a file

User impact: Users may experience degradation with Copilot responses after uploading a file.

More info: Affected users may be returned an error message stating, "Oops! Something happened. Can you try again?"

Users report low-quality responses or hallucinations when Copilot is prompted to respond on content within uploaded files.

Current status: We're analyzing service telemetry for file upload scenarios for Copilot to isolate when the degradation started and to determine our next troubleshooting steps.

Scope of impact: Some users may experience degradation with Copilot responses after uploading a file. This section may be updated as the investigation progresses. https://status.dal.ca/service.php?Service=8 2026-06-10 14:16:37 DetailsTitle: We're looking into a potential problem impacting Microsoft 365 Copilot Chat

User impact: We're checking for potential impact to your users. https://status.dal.ca/service.php?Service=8 2026-06-10 13:50:38 DetailsTitle: Users may be unable to access files in Excel for the web opened from SharePoint Online

User impact: Users may be unable to access files in Excel for the web opened from SharePoint Online.

More info: As a workaround, users can open the file in the Excel desktop app instead.

Current status: We're reproducing the impact of this event and gathering logs associated with specific requests to better understand this issue and determine our next steps.

Scope of impact: Users accessing subsites with unique permissions not inherited from the parent site on SharePoint Online aren't able to access files in Excel for the web browser. https://status.dal.ca/service.php?Service=8 2026-06-10 13:49:36 Eastlink Change Control Completion Notice

Customer: Dalhousie

Change Control ID : 2275518

Start Date: 2026-06-10

End Date: 2026-06-10

Country: Canada

Location Of Work: PASADENA, NL

Reason For Work: 3rd Party Provider Work

Release Window (24 hr format): 08:00 - 18:00 Newfoundland

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

Service Impact: Your services will be under threat while 3rd party provider does dark fibre work.

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=21 2026-06-10 13:48:37 Users may be unable to access files in Excel for the web opened from SharePoint Online. As a workaround, users can open the file in the Excel desktop app instead. https://status.dal.ca/service.php?Service=8 2026-06-10 10:32:43 Start Date: Jun 09, 2026 09:00 AM EST
End Date: Jun 10, 2026 05:00 AM EST
Cause: Upgrade - Software

Service Outage Details
Emergency maintenance necessary tonight. During this event, users could have trouble using the Web dispatch tool.

Impacted Services
Push to Talk

Impacted Locations / Sites
Canada https://status.dal.ca/service.php?Service=8 2026-06-10 08:21:29 StatusService Degradation



Impacted servicesMicrosoft 365 suite



DetailsTitle: Admins' Microsoft 365 Copilot usage reports within the Microsoft 365 admin center may be delayed

User impact: Admins' Microsoft 365 Copilot usage reports within the Microsoft 365 admin center may be delayed.

More info: The affected Copilot usage reports consist of the following:

-Microsoft 365 Copilot usage reports

-Microsoft 365 Copilot Chat usage reports

-Microsoft Graph API Copilot usage reports

These reports will be delayed beginning Wednesday, June 10, 2026, at 12:00 AM UTC.

Current status: Our service telemetry alerted us to an issue in which admins in North America and Asia Pacific regions may receive Copilot usage reports delayed through the Microsoft admin center. We've identified that a delay in our upstream process for Copilot source data is preventing Copilot usage reports from publishing up-to-date data and is resulting in delayed reporting. We're examining this affected upstream process to pinpoint the underlying cause for the delay and to develop a remediation strategy.

Scope of impact: Any admin located in North America and Asia Pacific regions attempting to view up to date affected Copilot usage reports through the Microsoft 365 admin center listed in the more info section may be impacted by this event. This section may be updated as our investigation continues.

Root cause: A delay in our upstream process for Copilot source data is preventing Copilot usage reports from publishing up-to-date data and is resulting in delayed reporting.

Next update by: Wednesday, June 10, 2026, at 10:30 AM UTC https://status.dal.ca/service.php?Service=8 2026-06-10 08:20:26 StatusService Degradation








Impacted servicesMicrosoft 365 suite, Microsoft Teams, Microsoft Copilot (Microsoft 365)








DetailsTitle: Users can’t access some Assignment features in multiple M365 apps

User impact: Users can’t access some Assignment features in multiple M365 apps.

More info: Affected M365 Assignment features include, Reading Progress in Microsoft Teams, Speaker Progress in Microsoft Teams, Teach in the Microsoft 365 Copilot app.



Affected teachers may be unable to create Reading Progress or Speaker Progress assignments, view history in Teach for Microsoft Copilot, save artifacts created in Teach, or save artifacts created in Learn. Teachers may also see failures with Study Guide and the Study and Learn Agent, and the Learning Activities Web App may fail to load the home page.

Affected students may be unable to access or turn in Reading Progress or Speaker Progress assignments. https://status.dal.ca/service.php?Service=8 2026-06-10 08:19:44 Impacted services Teams








DetailsTitle: Users may be unable to access some Assignment features in Teams for Education

User impact: Users may be unable to access some Assignment features in Microsoft Teams for Education.

More info: Affected teachers may be unable to create Reading Progress or Speaker Progress assignments, view history in Teach, save artifacts created in Teach, or save artifacts created in Learn. Teachers may also see failures with Study Guide and LAM, and the Learning Activities Web App may fail to load the home page.

Affected students may be unable to access or turn in Reading Progress or Speaker Progress assignments. https://status.dal.ca/service.php?Service=8 2026-06-09 14:06:40 Eastlink New Change Control Notice

Type Of Work: Maintenance

Customer: Dalhousie

Change Control ID : 2275518

Start Date (yyyy-mm-dd): 2026-06-10

End Date (yyyy-mm-dd): 2026-06-10

Country: Canada

Location Of Work: PASADENA, NL

Reason For Work: 3rd Party Provider Work

Release Window (24 hr format): 08:00 - 18:00 Newfoundland

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

Service Interruption Duration: Network Threat - NonService Affecting

Service Impact:
Your services will be under threat while 3rd party provider does dark fibre work.

Comment:
For your records

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=8 2026-06-08 09:43:33 Ticket ID: 21126 (Interruption - Start - Major)
Start Date: Jun 06, 2026 01:00 PM EST
End Date: Jun 06, 2026 02:36 PM EST
Cause: Issue with a link

Service Outage Details
Customers are not recieving their SMS and MMS notifications impacting inbound to Bell from intercarier.

Impacted Services
Text Messaging

Impacted Locations / Sites
Canada https://status.dal.ca/service.php?Service=6 2026-06-08 07:34:48 Active Issues:

- Users may see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable.

- Users may be unable to create new online meetings from shared calendar events in Exchange Online. Affected users can create online meetings from their personal calendars as an alternative method, and existing shared calendar events remain unaffected.



Resolved Issue:

- When a user opened and edited an email message in the draft folder, sent it, and then viewed it from their sent folder, the edited portion may have appeared blank in the message preview. https://status.dal.ca/service.php?Service=38 2026-06-05 14:21:52 Resolved:
- Users attempting to prompt Microsoft 365 Copilot Chat using the Claude Opus model may have received an error stating: "We're experiencing high demand. Please try again later." https://status.dal.ca/service.php?Service=38 2026-06-05 08:33:14 Copilot:
- When users attempt to prompt Microsoft 365 Copilot Chat using the Claude Opus model, they may receive an error that states, "We're experiencing high demand. Please try again later." https://status.dal.ca/service.php?Service=36 2026-06-04 15:05:40 New Change Control Notice

Type Of Work: Maintenance

Customer: Canary NOC

Change Control ID : 2267092

Start Date (yyyy-mm-dd): 2026-06-19

End Date (yyyy-mm-dd): 2026-06-19

Country: Canada

Location Of Work: Halifax - NS

Reason For Work: Network Maintenance

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

Affected Circuits:
00152705 - 10G Canarie Memorial University to Dalhousie

Service Interruption Duration: less than 1 hour

Service Impact:
Your services will be impacted while we perform Core Network Maintenance

Comment:
For your records

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=38 2026-06-04 11:55:54 Some users' Windows devices with policies configured to prevent auto updates may be installing drivers
ID: MO1332784Issue type: Advisory

Status: Service Restored

Impacted services M365 suite

User impact: Users' Windows devices with configured policies to prevent auto updates might have been installing drivers.

More info: As we worked to remediate the impact, we determined that the drivers installed were Microsoft approved/signed and that they didn't pose a security threat.

Final status: We've validated that this issue is resolved following impact remediation confirmation from a subset of previously affected users.

Scope of impact: This issue may have caused drivers to be installed for users with a Windows device configured to prevent auto updates.

Start time: Tuesday, June 02, 2026, at 1:00 PM UTC

End time: Wednesday, June 03, 2026, at 5:30 AM UTC

Root cause: A caching service used by the Windows Update service temporarily dropped device enrollment information. As a result, affected Windows devices were briefly treated as non-enrolled, preventing the expected driver-approval controls being applied.

Next steps:

- We're continuing to review how this caching service temporarily dropped Windows device enrollment information to better inform how to detect, prevent, and respond to similar service issues in the future.

This is the final update for the event. https://status.dal.ca/service.php?Service=39 2026-06-04 09:14:31 Users' Microsoft Teams Webinar registration confirmation email messages are delayed up to three hours

User impact: Users' Microsoft Teams Webinar registration confirmation email messages are delayed up to three hours.

More info: Impact typically occurs for one to three hours between the time frame of 1:00 PM UTC to 11:00 PM UTC.

Current status: We've identified an increase in request traffic to the portion of service infrastructure responsible for facilitating Webinar registration confirmation email messages which is causing delays when delivering them to end users. We're evaluating mitigation options to determine the most efficient method to remediate the impact. https://status.dal.ca/service.php?Service=38 2026-06-03 09:39:26 Some users' Windows devices with policies configured to prevent auto updates may be installing drivers

User impact: Users' Windows devices with configured policies to prevent auto updates may be installing drivers.

More info: As we work to remediate the impact, we've determined that the drivers being installed are Microsoft approved/signed and that they don't pose a security threat.

Current status: We've identified a potential service cache misconfiguration that we believe could be causing drivers to become unexpectedly installed when policies are configured to prevent it. We're further analyzing our service cache configurations to confirm our findings, and so we can determine the next steps for remediating the impact. https://status.dal.ca/service.php?Service=38 2026-06-03 08:35:08 Microsoft Copilot:

Microsoft reported and resolved the following Copilot-related issues:
- Users may have seen latency when using tools and chats in the Microsoft 365 Copilot app.
- Users may have intermittently been unable to complete Copilot requests or receive responses. https://status.dal.ca/service.php?Service=6 2026-06-02 07:18:00 Active Issues:

- When a user opens and edits an email message in the draft folder, sends it, and then views it from their sent folder, the edited portion may appear blank in the message preview. Impact only occurs for users utilizing the "Show email as individual messages" Message organization setting. While we work on mitigating this issue, users can utilize the "Show email grouped by conversation" message organization setting to avoid this issue.

- Users may see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable.

- Users may be unable to create new online meetings from shared calendar events in Exchange Online. Affected users can create online meetings from their personal calendars as an alternative method, and existing shared calendar events remain unaffected.



Resolved Issue:

- Users may have experienced errors or failures when accessing their mailbox via one or more Exchange Online connection methods, including Outlook on the web. https://status.dal.ca/service.php?Service=38 2026-06-01 15:06:56 Resolved:

- Copilot: Users may have been unable to access the Copilot desktop or web app. https://status.dal.ca/service.php?Service=38 2026-06-01 14:07:05 Copilot:
- Users may be unable to access the Microsoft Copilot (Microsoft 365) desktop or web app. https://status.dal.ca/service.php?Service=38 2026-06-01 13:08:14 Unable to open files in Office for the web or Microsoft Teams

User impact: Users may have been unable to open files in Office for the web or Microsoft Teams.

More info: Impacted Office Apps included, but were not limited to:

- Excel

- PowerPoint

When users opened documents, impacted users were shown the following error message "Office Online services aren't available right now. We're working to restore all services as soon as possible. Please check back soon."

Final status: We've confirmed through customer reports and service telemetry that the impact has been resolved, and the service has remained stable for an extended period of time. As the issue recovered without any specific engineering actions being implemented, engineer teams continue to investigate the underlying root cause so actions can be taken to prevent the issue from reoccurring. https://status.dal.ca/service.php?Service=39 2026-06-01 13:04:54 Resolved:
- Users may have been unable to open files in Office for the web or Microsoft Teams, including files stored in SharePoint and OneDrive. https://status.dal.ca/service.php?Service=40 2026-06-01 13:04:36 Resolved:
- Users may have been unable to open files in Office for the web or Microsoft Teams, including files stored in SharePoint and OneDrive. https://status.dal.ca/service.php?Service=21 2026-06-01 13:04:08 Resolved:
- Users may have been unable to open files in Office for the web or Microsoft Teams, including files stored in SharePoint and OneDrive. https://status.dal.ca/service.php?Service=6 2026-06-01 12:01:03 Active Issues:

- Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods, including Outlook on the web.

- When a user opens and edits an email message in the draft folder, sends it, and then views it from their sent folder, the edited portion may appear blank in the message preview. Impact only occurs for users utilizing the "Show email as individual messages" Message organization setting. While we work on mitigating this issue, users can utilize the "Show email grouped by conversation" message organization setting to avoid this issue.

- Users may see that after selecting a meeting room when scheduling meetings, it changes from available to unavailable.

- Users may be unable to create new online meetings from shared calendar events in Exchange Online. Affected users can create online meetings from their personal calendars as an alternative method, and existing shared calendar events remain unaffected. https://status.dal.ca/service.php?Service=38 2026-06-01 11:40:53 Unable to open files in Office for the web.
ID: MO1329446Issue type: Incident

Status Service Degradation

Impacted services O365 suite, SharePoint Online, OneDrive,Teams

DetailsTitle: Unable to open files in Office for the web.

User impact: Users may be unable to open files in Office for the web.

More info: Impacted Office Apps include, but are not limited to:

- Excel

When users open documents, impacted users are shown the following the following error message "Office Online services aren't available right now. We're working to restore all services as soon as possible. Please check back soon."

Current status: We're investigating service telemetry to isolate the source of the issue.

Scope of impact: This issue could impact any user attempting to access Office Apps using Office for the web or Teams.

Next update by: Monday, June 1, 2026, at 2:30 PM UTC https://status.dal.ca/service.php?Service=39 2026-06-01 11:26:17 Users may be unable to open files in Office for the web or Microsoft Teams. This includes files stored in SharePoint and OneDrive. When impacted users open documents, they are shown the following the following error message: "Office Online services aren't available right now. We're working to restore all services as soon as possible. Please check back soon." https://status.dal.ca/service.php?Service=40 2026-06-01 11:26:06 Users may be unable to open files in Office for the web or Microsoft Teams. This includes files stored in SharePoint and OneDrive. When impacted users open documents, they are shown the following the following error message: "Office Online services aren't available right now. We're working to restore all services as soon as possible. Please check back soon." https://status.dal.ca/service.php?Service=21 2026-06-01 11:25:54 Users may be unable to open files in Office for the web or Microsoft Teams. This includes files stored in SharePoint and OneDrive. When impacted users open documents, they are shown the following the following error message: "Office Online services aren't available right now. We're working to restore all services as soon as possible. Please check back soon." https://status.dal.ca/service.php?Service=43 2026-06-01 10:05:35 Users are experiencing intermittent flow runtime and flow management operations failures

User impact: Users experienced intermittent flow runtime and flow management operations failures.

Final Status: We completed applying configuration changes and restarting the impacted infrastructure and confirmed that impact persisted. To mitigate the issue, we then performed a failover to healthy, redundant storage infrastructure and, following a period of service health diagnostic analysis, we confirmed that functionality is restored. https://status.dal.ca/service.php?Service=43 2026-06-01 10:05:39 Users may be unable to perform control plane operations on their capacities in Fabric

ID: PB1326627Issue type: Advisory

StatusService Restored

Impacted services: Power BI

DetailsTitle: Users may be unable to perform control plane operations on their capacities in Fabric

User impact: Users may have been unable to perform control plane operations on their capacities in Fabric.

More info: The affected control plane operations may have consisted of the following:

- Deprovisioning

- Pausing

- Deleting

Final status: We've completed the re-enabling process for the affected first party app and confirmed with our service telemetry that the issue is resolved.

Scope of impact: Any user who attempted to perform the control plane operations listed in the more info section on their capacities in Fabric may have been affected.

Start time: Friday, May 29, 2026, at 5:25 PM UTC

End time: Saturday, May 30, 2026, at 3:20 AM UTC

Root cause: A first party app that facilitates the impacted operations was disabled and caused impact.

Next steps:

- We've investigating the impacted first party app which facilitates control plane operations to better understand why it was disabled so that we can prevent similar impact to Fabric capacities in the future.

This is the final update for the event. https://status.dal.ca/service.php?Service=43 2026-06-01 10:05:05 Users are experiencing intermittent flow runtime and flow management operations failures

User impact: Users are experiencing intermittent flow runtime and flow management operations failures.

Current Status: We are aware of an emerging issue where users are experiencing intermittent flow runtime and flow management operations failures. We are investigating the issue and will provide another update within the next 30 minutes. https://status.dal.ca/service.php?Service=38 2026-06-01 09:53:44 Users are intermittently unable to create, save, manage, or run Microsoft 365 workflows

User impact: Users are intermittently unable to create, save, manage, or run Microsoft 365 workflows.

More info: Affected users experience intermittent failures with Microsoft Power Automate flows, Microsoft Teams workflows, Microsoft 365 Copilot flows, and Microsoft 365 Copilot agent flows. Users encounter failures when creating, saving, updating, or running workflows and automations.

Current status: Our monitoring systems have identified impact where users experience intermittent failures when creating, saving, managing, or running Microsoft 365 workflows. Our investigation has identified an issue affecting storage connectivity required for Microsoft 365 workflow operations, resulting in intermittent failures. We're reviewing potential mitigation actions to identify and implement an appropriate solution for this impact. https://status.dal.ca/service.php?Service=43 2026-06-01 09:51:16 Users may be unable to initiate Spark sessions or open and perform actions in Microsoft Fabric Notebooks

User impact: Users may have been unable to initiate Spark sessions or open and perform actions in Microsoft Fabric Notebooks.

Final status: We've completed the manual restoration of the upstream service and after a period of monitoring, we confirmed impact is remediated. https://status.dal.ca/service.php?Service=43 2026-06-01 09:50:04 Some users may experience errors when performing actions in Microsoft Fabric Notebooks

User impact: Users may experience errors when performing actions in Microsoft Fabric Notebooks

Current status: We've identified a supporting upstream service is performing at suboptimal levels, resulting in poor performance when completing actions in Microsoft Fabric Notebooks. We're working to identify any possible mitigation options while in parallel investigating the root cause of the upstream impact. https://status.dal.ca/service.php?Service=38 2026-06-01 09:25:15 Some users may have been unable to setup Multi-Factor Authentication (MFA) or access the mysignins.microsoft.com website

User impact: Users may have been unable to setup MFA or access the mysignins.microsoft.com website.

More info: Users may have encountered 504 Gateway Timeout errors when trying to access mysignins.microsoft.com

Current status: We've identified a recent cache configuration change required a failover. During the failover, the service experienced high CPU and memory utilization as EU traffic peaked, which prevented the MySignIn service from processing the volume of requests. Mitigation actions have since been rolled back, and traffic has been restored to the original infrastructure. https://status.dal.ca/service.php?Service=38 2026-06-01 09:24:33 Some users may be unable to setup Multi-Factor Authentication (MFA) or access the mysignins.microsoft.com website

User impact: Users may be unable to setup MFA or access the mysignins.microsoft.com website.

Current status: We've received reports indicating an issue with setting up MFA or accessing the mysignins.microsoft.com page. We're reviewing service health telemetry to help isolate the root cause and determine our next troubleshooting steps. https://status.dal.ca/service.php?Service=38 2026-06-01 09:12:11 Some users may not have seen responses from Microsoft Copilot (Microsoft 365) custom engine agents

User impact: Users may not have seen responses from Microsoft Copilot (Microsoft 365) custom engine agents.

More info: Impacted users may have seen empty message bubbles when interacting with custom engine agents, including admin agents.

Final status: We’ve confirmed that impact is fully remediated following the reversion, with custom engine agents returning responses as expected. Users who continue to see impact may need to start a new Copilot session for the fix to take effect. https://status.dal.ca/service.php?Service=38 2026-06-01 08:52:09 Users are intermittently unable to create, save, manage, or run Microsoft 365 workflows

User impact: Users were intermittently unable to create, save, manage, or run Microsoft 365 workflows.

More info: Affected users experienced intermittent failures with Microsoft Power Automate flows, Microsoft Teams workflows, Microsoft 365 Copilot flows, and Microsoft 365 Copilot agent flows. Users encountered failures when creating, saving, updating, or running workflows and automations.

Final status: We've rerouted traffic to alternate infrastructure to remediate the issue and have verified through monitoring that this action successfully mitigated the problem. https://status.dal.ca/service.php?Service=38 2026-06-01 08:49:55 Users may be unable to use Microsoft 365 Copilot

User impact: Users may have been unable to use Microsoft 365 Copilot.

More info: Users received errors when attempting to interact with Microsoft 365 Copilot.

This issue affected Copilot experiences across all Microsoft 365 productivity apps and services.

Final status: After a period of extended monitoring, we've validated that service has been restored. https://status.dal.ca/service.php?Service=38 2026-05-29 15:58:40 Resolved:

Microsoft Copilot:
- Users may have received errors when attempting to interact with Microsoft Copilot across all Microsoft 365 productivity apps and services. https://status.dal.ca/service.php?Service=38 2026-05-29 13:24:41 Microsoft Copilot:
- Users may receive errors when attempting to interact with Microsoft Copilot. This issue affects Copilot experiences across all Microsoft 365 productivity apps and services. https://status.dal.ca/service.php?Service=36 2026-05-28 11:08:55 Eastlink New Change Control Notice

Type Of Work: Project

Customer: Canary NOC

Change Control ID : 2263772

Start Date (yyyy-mm-dd): 2026-06-12

End Date (yyyy-mm-dd): 2026-06-12

Country: Canada

Location Of Work: Port Hawkesbury - NS

Reason For Work: Forced Relocate

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

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

Service Interruption Duration: 4 hours

Service Impact:
Your services will be impacted while we perform a Forced Fiber Relocate

Comment:
For your records

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=38 2026-05-28 09:11:08 Users may intermittently receive blank responses from Analyst agent in Microsoft Copilot

User impact: Users may have intermittently received blank responses from Analyst agent in Microsoft Copilot.

Final status: We've completed safely disabling the offending OneDrive file and link feature within the affected infrastructure, and we've validated with internal testing that the issue is resolved. https://status.dal.ca/service.php?Service=39 2026-05-28 09:09:36 Some users may be unable to initiate screen sharing in 1:1 calls using the Microsoft Teams web client

User impact: Users may have been unable to start screen sharing in 1:1 calls using Microsoft Teams web client.

More info: This issue only affected users leveraging Chromium-based browsers, such as the Edge or Chrome browser, attempting to screenshare in a 1:1 call on the Teams web app. Additionally, the first screen sharing session in each call wasn't affected; only subsequent screen-sharing attempts may have been impacted.

While we were working to remediate this issue, affected users could still perform screen sharing by:

- Using the desktop or mobile apps

- Leveraging a non-Chromium-based browser

- Adding another user to the call

- Ending and restarting the call

Final status: Our fix is now fully deployed to both Mac and Windows devices, and any users still encountering the issue can update their Teams web client to the latest version to receive the fix and remediate impact. https://status.dal.ca/service.php?Service=12 2026-05-28 07:56:22 Beginning Monday, June 1st, crews will be mobilizing to start necessary structural repairs to the exterior concrete ramp located on the west side of the building.

Temporary fencing will be installed around the ramp area to clearly identify and secure the work zone for the duration of the project.

Please note:

The parking lot will remain open during construction.

Deliveries to Jenkins can continue as normal.

Exit doors leading onto the ramp will remain operational as required for emergency egress from the Alumni Theatre.



The work is scheduled to take approximately four (4) weeks to complete.

We appreciate your patience and cooperation while this work is being completed. https://status.dal.ca/service.php?Service=38 2026-05-27 14:37:28 Some users' prompts to Copilot Studio agents that leverage the Microsoft Teams channel connector may fail

User impact: Users' prompts to Copilot Studio agents that leveraged the Microsoft Teams channel connector may have failed.

Final status: After analyzing conversation IDs provided by a subset of affected users, we've isolated that a recent update intended to allow the acquisition of authentication components using Copilot Studio agents on behalf of the user introduced a regression that caused authentication checks to fail as they weren't provisioned to the user completing the request. We've rolled back the offending change and validated with a subset of affected tenants that our actions successfully remediated impact. https://status.dal.ca/service.php?Service=12 2026-05-27 13:42:10 Please note that the department of Facilities Management has a planned power outage scheduled for 6:30am to 7:30pm pm on Friday May 29th and 6:30am to 7:30pm on Saturday May 30th , to complete required maintenance to the campus’s electrical infrastructure.

This outage will impact: Cox Institute (West & East side of building), Langille Athletic Center, Banting Building & MacRae Library.



Building not noted above, will not be affected by this power outage.

As a reminder, the entire building impacted will not be able to be occupied during the outage period, which includes for approximately one hour after work is completed and power is restored.

in preparation for the upcoming power outage at the AC, the Office of Environmental Health and Safety would like to remind everyone to help prepare their areas by completing the following tasks before they leave the day before the outage (before end of day Thursday May 28th).

Powering down and unplugging any computers, printers, photocopiers, etc. (especially those that are not connected to surge protectors).

Removing any perishable food or drink from lunchroom or office fridges/freezers

If it is safe to do so, powering down and/or disconnecting any laboratory equipment(especially any heating devices, such as ovens or hot plates, which may come back on when power is restored).

If it is safe to do so, turning off any process gasses, process liquids, or water supplies to equipment.

Releasing pressure on any systems that may still be under load, such as hydraulic cylinders.

Ensuring any laboratory backup systems that might be in-place are in good working order (batteries fully charged, gas cylinders full, etc.)

Properly stoppering/capping,and storing,any laboratory chemicals that may be present.

Fully closing all fumehood sashes.



Cox Institute is equipped with integrated generator backups in which this system will be operating as normal. https://status.dal.ca/service.php?Service=36 2026-05-27 12:00:23 Eastlink Change Control Completion Notice

Customer: Dalhousie

Change Control ID : 2266251

Start Date: 2026-05-27

End Date: 2026-05-27

Country: Canada

Location Of Work: Pasadena, NL

Reason For Work: 3rd Party Provider Work

Release Window (24 hr format): 08:00 - 18:00 Newfoundland

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

Service Impact: Your services will be under threat while 3rd party provider does planned fibre audit.

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