Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users may have experienced a reduction in file upload and download speed in Microsoft Teams – ONGOING

Announcements Arpan Das

10/04/2026 09:53:00 AM

NHSmail Reference: INC46795027

Microsoft Reference: TM1275119

Issue Status: ONGOING

Issue Description: Users may have experienced a reduction in file upload and download speed in Microsoft Teams.

Current Update: 10/04/2026 09:53:00 AM–Microsoft has investigated a problem with the Microsoft Teams service in which users may have experienced a reduction in file upload and download speed in Microsoft Teams, and they have confirmed that service is now restored. They will provide additional information in a closure summary within the “History” section of the “Service health” dashboard shortly.