Microsoft 365 Alert – Service Degradation – Microsoft Teams – Some users may experience intermittent crashes when launching the Microsoft Teams desktop app on Windows – RESOLVED

Announcements Arpan Das

29/10/2025 08:44:00 AM

NHSmail Reference: INC46669070

Microsoft Reference: TM1181326

Issue Status: RESOLVED

Issue Description: Users may experience intermittent crashes when launching the Microsoft Teams desktop app on Windows.

Final Update: 10/11/2025 09:07:00 AM – Microsoft’s have completed their reversion of the impacting change and confirmed impact was successfully remediated.

Scope of impact: Impact is specific to some users attempting to launch the Microsoft Teams desktop app on Windows.

Root cause: A recent standard service update contains a code regression, which is resulting in impact.

Next Steps: Microsoft are reviewing their standard service update testing and validation procedures to identify opportunities to improve regression detection and better prevent similar future impact.