Some users with an active Microsoft Teams license may be unable to sign in to Microsoft Teams

Title: Some users with an active Microsoft Teams license may be unable to sign in to Microsoft Teams User impact: Users with an active Microsoft Teams license may have been unable to sign in to Microsoft Teams. More info: Additionally, admins may have been unable to access organization wide settings. Final status: We’ve completed the reversion of the offending authorization configuration change and confirmed through service telemetry that the issue is resolved. Scope of impact: Impact was limited to some users with an active Microsoft Teams license who attempted to sign in to Microsoft Teams. Start time: Thursday, August 27, 2026, at 2:41 PM UTC End time: Thursday, August 27, 2026, at 9:58 PM UTC Root cause: A recent authorization configuration change intended to block users without active licenses inadvertently blocked some users with active Microsoft Teams licenses, resulting in impact. Next steps: We're reviewing our validation and updating procedures to better detect and prevent issues like this prior to deployment in the future. This is the final update for the event.

Title: Some users with an active Microsoft Teams license may be unable to sign in to Microsoft Teams User impact: Users with an active Microsoft Teams license may be unable to sign in to Microsoft Teams. More info: Additionally, admins may be unable to access organization-wide settings. Current status: We’ve initiated the reversion of the offending authorization configuration change and are monitoring the service to ensure it completes successfully. We’ll provide a resolution timeline once available. Scope of impact: Impact may occur for some users with an active Microsoft Teams license who are attempting to sign in to Microsoft Teams. This information may be updated as our investigation continues. Start time: Thursday, August 27, 2026, at 2:41 PM UTC Root cause: A recent authorization configuration change intended to block users without active licenses inadvertently blocked some users with active Microsoft Teams licenses, resulting in impact. Next update by: Friday, August 28, 2026, at 1:30 AM UTC

Title: Some users with an active Microsoft Teams license may be unable to sign in to Microsoft Teams User impact: Users with an active Microsoft Teams license may be unable to sign in to Microsoft Teams. More info: Additionally, admins may be unable to access organization-wide settings. Current status: We’ve received reports that some users with an active Microsoft Teams license are unable to sign in to Microsoft Teams. Our assessment has determined that a recent authorization configuration change intended to block users without active licenses is resulting in impact. We’re validating a remediation action to revert the offending change and will provide a resolution timeline once available. Scope of impact: Impact may occur for some users with an active Microsoft Teams license who are attempting to sign in to Microsoft Teams. This information may be updated as our investigation continues. Root cause: A recent authorization configuration change intended to block users without active licenses inadvertently blocked some users with active Microsoft Teams licenses, resulting in impact. Next update by: Thursday, August 27, 2026, at 10:30 PM UTC