Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users may be unable to schedule Microsoft Teams meetings through the classic Outlook desktop client – ONGOING

Announcements Arpan Das

25/06/2026 10:02:00 AM

NHS.net Connect Reference: INC46861210

Microsoft Reference: TM1402778

Issue Status: ONGOING

Issue Description: Users may be unable to schedule Microsoft Teams meetings through the classic Outlook desktop client.

More info: Impact is specific to Microsoft Teams version 26149.1205.4798.6437. The Teams Meeting add-in appears to be installed and enabled in classic Outlook; however, it isn’t being displayed, preventing affected users from scheduling Teams meetings directly from the Outlook ribbon.

Current Update: 02/07/2026 09:10:00 AM –Microsoft are progressing with deploying the fix, and the deployment is expected to complete by Friday, July 3, 2026.

Scope of impact: Users on Microsoft Teams version 26149.1205.4798.6437 and attempting to create and schedule Microsoft Teams meetings through the classic Outlook desktop client may be impacted.

Root cause: A recent service update introduced an incompatibility affecting how the Teams Meeting add-in identifies the appropriate Teams client during initialization in newly configured Outlook environments impact, resulting in impact.

Next update by: Friday, July 3, 2026, at 10:30 AM UTC