Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users’ may not hear their Microsoft Teams secondary ringer audio on specific devices – ONGOING

16/04/2026 8:45:00 AM

NHSmail Reference: INC46800662

Microsoft Reference: TM1281090

Issue Status: ONGOING

Issue Description: Users’ may not hear their Microsoft Teams secondary ringer audio on specific devices.

More info: Specifically, this issue affects the secondary ringer for users who are leveraging Citrix Virtual Desktop Infrastructure (VDI) 2 devices.

Current Update: 16/04/2026 8:54:00 AM– Microsoft has determined that a recent change made to handling of device management has introduced a regression which is resulting in the impact and they are developing a solution to resolve this issue.

Scope of impact: Some users attempting to move channels into folders or sections within Microsoft Teams may be impacted. This section may be updated as our investigation progresses.

Root cause: A recent code change introduced a race condition that occurs when users attempt to move channels into folders or sections, resulting in impact.

Next update by: Monday, April 20, 2026, at 11:00 PM UTC