Microsoft 365 Alert – Service Degradation – Microsoft Teams – Some users may see intermittent failures with voice applications in Microsoft Teams – RESOLVED

Announcements Sourav Nandi

23/07/2025 09:15:00 AM

NHSmail Reference: INC46586267

Microsoft Reference: TM1120290

Issue Status: RESOLVED

Issue Description: Some users may see intermittent failures with voice applications in Microsoft Teams.

More Info: Some users may also see intermittent failures with Microsoft Teams meetings

Final Update: 23/07/2025 13:35:00 PM – Microsoft have rerouted additional affected traffic and confirmed after a period of monitoring that all impact has been remediated.

Scope of impact: This issue may intermittently impact any user utilizing voice applications in Microsoft Teams.

Root cause: An increase in requests is impacting a portion of infrastructure that facilitates connections to various voice applications in Microsoft Teams.

Next steps: Microsoft are analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again.