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

Announcements Arpan Das

25/06/2026 10:02:00 AM

NHS.net Connect Reference: INC46861210

Microsoft Reference: TM1402778

Issue Status: RESOLVED

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.

Final Update: 13/07/2026 09:28:00 AM –Microsoft has confirmed that the deployment has successfully completed and validated through service health telemetry that the issue has been resolved and impact no longer persists.

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 steps: Microsoft is reviewing their update procedures to better identify similar issues during their development and testing cycles.