Users may see a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version

Title: Users may see a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version User impact: Users may have seen a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version. More info: The error stated "You're using an old version of Teams. Update the app to continue using Teams on this device". This banner appeared in the Microsoft Teams desktop app regardless of the version being used. Final status: We've updated the configuration of the offending service update and confirmed that impact is remediated. Scope of impact: Users on newer versions of Microsoft Teams may have been impacted. Start time: Monday, July 27, 2026, at 12:30 PM UTC End time: Friday, July 31, 2026, at 6:40 PM UTC Root cause: The service that detects the version of Microsoft Teams a user was using was mistakenly detecting new versions as old, resulting in impact. Next steps: We're reviewing the service that detects the version of Microsoft Teams to identify why it was misconfigured, allowing us to prevent future instances of impact.

Title: Users may see a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version User impact: Users may see a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version. More info: The error states "You're using an old version of Teams. Update the app to continue using Teams on this device". This banner appears in the Microsoft Teams desktop app regardless of the version being used. Current status: We're continuing to update the configuration of the offending service to prevent theses false detections and remediate impact. Scope of impact: Users on newer versions of Microsoft Teams may be impacted. This information may be updated as our investigation continues. Root cause: The service that detects the version of Microsoft Teams a user is using is mistakenly detecting new versions as old, resulting in impact. Next update by: Friday, July 31, 2026, at 7:00 PM UTC

Title: Users may see a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version User impact: Users may see a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version. More info: The error states "You're using an old version of Teams. Update the app to continue using Teams on this device". This banner appears in the Microsoft Teams desktop app regardless of the version being used. Current status: We've identified that the service that detects the version of Microsoft Teams a user is using is mistakenly detecting new versions as old, resulting in impact. We're updating the configuration of this service to prevent theses false detections and remediate impact. Scope of impact: Users on newer versions of Microsoft Teams may be impacted. This information may be updated as our investigation continues. Root cause: The service that detects the version of Microsoft Teams a user is using is mistakenly detecting new versions as old, resulting in impact. Next update by: Friday, July 31, 2026, at 5:00 PM UTC

Title: Users may see a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version User impact: Users may see a banner in the Microsoft Teams desktop app mistakenly stating they are on an old version. More info: The error states "You're using an old version of Teams. Update the app to continue using Teams on this device". This banner appears in the Microsoft Teams desktop app regardless of the version being used. 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.