Connection between Outlook and Teams

Question

Hi Support Team,

i lost connection between my Outlook Calender and Teams. Please help asap cant enter my meetings anymore.

Answer 1

Dear Fatma Dabbach,

It sounds like Outlook and Teams are no longer syncing your calendar correctly. To help you regain access to your meetings, I will need a bit more information about what exactly is happening on your side. Could you kindly confirm these following: 

1/ Are you using Teams Desktop, Teams Web, New Teams, or Teams Mobile? 

2/ In Teams, do you see any calendar at all, or is the entire calendar tab empty? 

3/ Are you signed in with the same email account in both Outlook and Teams? 

4/ Did this issue start after an update, password change, device change, or reinstall? 

5/ Can you see your meetings normally when you log in to Outlook on the web (https://outlook.office.com)? 

6/ Is this happening on one device only, or on all of your devices? 

As a first recommendation, please try signing out of Teams and Outlook completely, then sign back in using the same account in both apps. Also make sure your Teams calendar is connected to the correct email account under Teams > Settings > Accounts. If you can provide a screenshot of what you see on your Teams calendar, I will be able to investigate the issue further and guide you to the right solution.

Note: Please understand that as a forum moderator, my primary goal is to provide helpful guidance and support through general troubleshooting steps. While I don’t have access to internal systems or test devices required to resolve backend/account issues, I truly appreciate your understanding of these limitations.

I hope you find this information helpful. If anything is unclear, please don’t hesitate to reach out to me. 

Answer 2

Follow these steps to restore the Outlook–Teams meeting connection, depending on which Outlook experience is in use.

1. If using the new Outlook (with a “Teams meeting” toggle)
   The Teams integration is built in, not a separate add-in. a. Make sure the requirements are met:
   • Signed in to Outlook with the work/school account.
   • Signed in to Teams with the same work/school account.
   • Using the new Teams client.
   b. Reinitiate the integration:
   1. Close Outlook.
   2. Right‑click the Teams icon in the Windows taskbar notification area and select Quit Teams.
   3. Start Teams, sign in with the work/school account.
   4. Start Outlook again and open the Calendar.
   5. Create a new event and check for the Teams meeting toggle in the event window.
2. If using classic Outlook with the Teams Meeting add‑in (button missing)
   After updating to New Teams, the add‑in may not have installed correctly. a. Reinstall the Teams Meeting Add‑in:
   1. Right‑click Start → Settings → Apps → Installed apps.
   2. Search for Teams Meeting Add-in.
   3. Click the three dots (…) → Uninstall.
   4. Close Outlook.
   5. In the system tray, right‑click the Teams icon → Quit.
   6. Start New Teams again; it will reinstall the Teams Meeting Add‑in.
   7. Once the Teams Meeting Add-in shows again under Installed apps, restart Outlook and check Calendar → New Meeting for the Teams Meeting button.
3. If the Teams meeting toggle/button still does not appear
   • Confirm the account has the correct Microsoft 365 license that includes Teams meetings.
   • If licensed correctly and the above steps do not help, an admin can check the mailbox calendar configuration (for example, DefaultOnlineMeetingProvider) as in the referenced Q&A, or open a support ticket with Microsoft 365 Support for tenant‑level investigation.

After these steps, Outlook Calendar should again show the Teams meeting option so meetings can be joined or scheduled from Outlook.

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References:

• Teams Meeting add-in missing in new Outlook
• Teams Meeting add-in is missing in Outlook Desktop after updating to New Teams
• Teams Meeting toggle on new Outlook and Teams upon creating event not available - Microsoft Q&A