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Teams add-in in Outlook missing or not loading

The 'Teams Meeting' button should be in the Outlook calendar but is gone. Common after Office updates or the switch from classic to new Teams.

Last verified:

Affected systems

windows macos

Quick fixes

  • Restart Outlook - add-ins load only on startup
  • Run Teams once as administrator
  • Enable the Teams add-in under Outlook 'Manage add-ins'

Symptom

In Outlook calendar when creating a new event, the “Teams Meeting” button is missing. Either no button at all, or the button does nothing.

Check the add-in manually

Windows

  1. Open Outlook, File → Options → Add-ins
  2. Bottom: “COM Add-ins”, click “Go…”
  3. Find “Microsoft Teams Meeting Add-in for Microsoft Office”
  4. Tick it, OK
  5. Restart Outlook

If the add-in is not in the list at all, Teams is not (correctly) installed or the registration is missing.

macOS

  1. Open Outlook, Outlook menu → Manage Add-ins
  2. Enable Microsoft Teams

If the add-in is not listed, search in the Microsoft AppStore inside Outlook for “Microsoft Teams” and install.

Run Teams as admin (Windows)

Sometimes running Teams once as administrator helps - it re-registers the Outlook add-in.

  1. Quit Teams
  2. Right-click Teams icon → “Run as administrator”
  3. Let it load fully, then quit
  4. Restart Outlook

Office repair

If the add-in disappeared after Office updates:

  1. Control Panel → Programs → Microsoft 365 → Change
  2. Pick “Quick Repair”
  3. If that does not help: “Online Repair” (longer, more thorough)
  4. Restart Teams + Outlook

Classic vs new Teams

If you have both installed (classic and new client), there are two add-ins:

  • “Microsoft Teams Meeting Add-in for Microsoft Office” (classic)
  • “Microsoft Teams” (new, via the integrated Office add-in model)

Sometimes they block each other. Recommendation: uninstall classic Teams, leave only the new one.