Microsoft Premier Support has confirmed that a silent license enforcement update affected shared mailboxes. They are actively working on restoring the Teams meeting toggle functionality for delegates. Unfortunately, no ETA is available right now. The M365 Admin Team is currently testing potential workarounds.
Posted Dec 23, 2025 - 10:00 EST
Update
Microsoft Support is still investigating the issue.
Posted Dec 08, 2025 - 12:44 EST
Investigating
Symptom: In OWA and the new Outlook, the “Teams meeting” switch is missing when creating meetings on calendars tied to the shared mailbox accounts. No relevant changes were made on our side.
Current status: We are working with Microsoft Premier Support and actively searching for workarounds. Some users are reporting that the Outlook Classic Desktop app on Windows is not affected.
Posted Nov 05, 2025 - 16:58 EST
This incident affects: Email Systems (Office 365, UTMail+).