Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users may be unable to upload background images larger than 1800×1800 during Microsoft Teams meetings – ONGOING

Announcements Sourav Nandi

28/03/2025 08:02:00 AM

NHSmail Reference: INC46488990

Microsoft Reference: TM1040294

Issue Status: ONGOING

Issue Description: Users may be unable to upload background images larger than 1800×1800 during Microsoft Teams meetings.

More info: When attempting to upload a background image larger than 1800×1800, users receive an error message stating “invalid image size” and the upload fails. Users can avoid this issue by resizing the desired image to below the aforementioned dimensions.

Current Update: 04/04/2025 08:50:00 AM – Microsoft’s work to address the issues preventing deployment of their fix is ongoing, and they expect they will have these cleared by their next scheduled update, allowing the deployment to begin.

Scope of impact: This issue may affect any user attempting to upload a background image larger than 1800×1800 during any Microsoft Teams meeting.

Root cause: A recent change instituted a restriction on image size for background image uploads in Microsoft Teams.

Next update by: Monday, April 7, 2025, at 11:00 PM UTC