Users may be unable to access some third-party apps within Microsoft Teams

Title: Users may be unable to access some third-party apps within Microsoft Teams User impact: Users may have been unable to access some third-party apps within Microsoft Teams. Final status: We've deployed our fix to address the upstream code issue and confirmed through monitoring service health telemetry that the impact has been remediated. Admins will need to restore the pre-impact app configurations within the Microsoft Teams admin center to have access restored. The pre-impact app configuration settings can be gathered from audit logs. Scope of impact: Any user attempting to access a some third-party apps may have been impacted. Start time: Friday, September 4, 2026, at 2:53 AM UTC End time: Friday, September 4, 2026, at 3:14 PM UTC Root cause: A code issue occurring within an upstream service caused the third-party app to be removed from the app catalog, resulting in impact. Next steps: - We're reviewing the offending code issue to determine how it was introduced into the service, so that we can prevent similar issues from occurring in the future. This is the final update for the event.

Title: Users may be unable to access some third-party apps within Microsoft Teams User impact: Users may be unable to access some third-party apps within Microsoft Teams. Current status: We've identified that a code issue occurring within an upstream service caused the third-party app to be removed from the app catalog, resulting in impact. We've developed a fix to address the code issue and return the app to the catalog, and we'll aim to provide a timeline for the deployment of our fix to begin by our next schedule communications update. Once the fix has been deployed, admins will need to restore the pre-impact app configurations within the Microsoft Teams admin center to have access restored. Scope of impact: Any user attempting to access some third-party apps may be impacted. This section may be updated as our investigation continues. Start time: Friday, September 4, 2026, at 2:53 AM UTC Root cause: A code issue occurring within an upstream service caused the third-party app to be removed from the app catalog, resulting in impact. Next update by: Friday, September 4, 2026, at 5:30 PM UTC

Title: Users may be unable to access some third-party apps within Microsoft Teams User impact: Users may be unable to access some third-party apps within 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.