TM1283300: Microsoft Teams Service Health Incident (Service Degradation)

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365 Service Alert

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Apr 17, 2026, 2:49:42 PM (8 days ago) Apr 17
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Users may be unable to launch the Microsoft Teams desktop client.                                                                                                                                                                                                                                           
Microsoft

Users may be unable to launch the Microsoft Teams desktop client

ID: TM1283300

Issue type: Incident

Status

Service Degradation

Impacted services

Microsoft Teams

Details

Title: Users may be unable to launch the Microsoft Teams desktop client

User impact: Users may be unable to launch the Teams desktop client.

More info: When attempting to launch the Microsoft Teams desktop client, users are stuck on the loading screen and receive an error message "We're having trouble loading your message. Try refreshing."

Impacted users should restart their client to bypass impact. 

Current status: We've determined that a recent service update introduced a regression within the Microsoft Teams client build caching system and is resulting in this transient issue's impact. We're reverting the offending update to remediate impact and will provide a timeline on this process as one becomes available.

Scope of impact: Users attempting to launch the Microsoft Teams desktop client may be impacted by this event. This section may be updated as our investigation continues. 

Root cause: A recent service update introduced a regression within the Microsoft Teams client build caching system and is resulting in impact.

Next update by: Monday, April 20, 2026, at 7:30 PM UTC

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