Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users see autogenerated chats during Public Switched Telephone Network (PSTN) calling scenarios in Microsoft Teams – ONGOING

Announcements Shagufta Naaz

25/02/2026 08:25:00 AM

NHSmail Reference: INC46758255

Microsoft Reference: TM1238395

Issue Status: ONGOING

Issue Description: Users see autogenerated chats during PSTN calling scenarios and Call Queue or Auto Attendant calls in Microsoft Teams.

More info: When placing outbound PSTN calls or receiving inbound PSTN calls, users see a chat thread autogenerated in the Microsoft Teams desktop client and web app. This also affects Call Queue and Auto Attendant calls.

Current Update: 02/03/2026 8:26:00 AM – Microsoft has completed deployment of their fix and are checking with a subset of affected users to confirm that impact is remediated.

Scope of impact: This may affect all admins updating the MacOS Wi-Fi policy for users on build 6.2602.7.2001 forward through Microsoft Intune.

Root cause: A code issue in a recent deployment to the Microsoft Teams calling service introduced a compatibility complication between the affected calling scenarios and chats, which is causing the chats threads to unexpectedly autogenerate in the Microsoft Teams desktop client and web app.

Next update by: Monday, March 2, 2026, at 5:00 PM UTC