Status Page

2026-03-19	Status	Description
01:13 PM		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
11:20 AM		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.
09:39 AM		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.

01:13 PM

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

11:20 AM

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.

09:39 AM

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.