Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users may be unable to view contents of the Files tab in newly created Microsoft Teams channels in the desktop client – RESOLVED

Announcements Sourav Nandi

19/05/2025 08:35:00 AM

NHSmail Reference: INC46531703

Microsoft Reference: TM1074644

Issue Status: RESOLVED

Issue Description: Users may be unable to view contents of the Files tab in newly created Microsoft Teams channels in the desktop client.

More info: Impact may also occur within Microsoft Teams on the web, and any file viewing requests reliant on the API leveraged for viewing files through Microsoft Teams may fail.

Final Update: 24/05/2025 08:30:00 AM – After monitoring the progression of Microsoft’s secondary fix, they’ve confirmed that it’s completed deploying and has successfully addressed the issue.

Scope of impact: Some users attempting to view contents of the Files tab in newly created Microsoft Teams channels in the desktop client may be impacted.

Root cause: A language configuration issue introduced by a recent change on the service side is resulting in impact to an API leveraged for serving files through Microsoft Teams.