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Outlook Teams addin problem/error message "Once you've signed in, you can start using Teams meetings in Outlook."

Alex Chong 15 Reputation points
2025-09-21T19:50:48.29+00:00

When I go to click on the Teams plugin via Outlook, I get an error message. "Once you've signed in, you can start using Teams meetings in Outlook." I am on Windows 11 with the latest update. I conducted some research on Google, but I didn't find anything useful. I did the following:

  1. Updated Teams and rebooted the computer.
  2. Ran a repair on the Office 365 and rebooted the computer.
  3. Reinstalled Teams and rebooted the computer.
  4. Reinstalled Office 365 and rebooted the computer.
  5. Updated Windows 11.
  6. Signed out and signed back into Teams and Outlook.

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Microsoft 365 and Office | Other
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  1. Sebastian Sipp 5 Reputation points
    2025-11-15T20:08:09.7233333+00:00

    Had the same issue. I was able to fix it.

    first I repaired Outlook and Teams - but problem persisted.

    Then looked into an MS thread on the subject and deleted / signed out all my Teams accounts, and after closing and restarting Teams, only added my work account, also used for outlook.

    The sign-in button in Outlook turned into the working one "schedule a meeting with Teams".

    all good :)

    1 person found this answer helpful.
  2. EmilyS726 186.4K Reputation points Independent Advisor
    2025-09-21T20:24:03.72+00:00

    Hello

    Are you using Microsoft personal account, or organization account?

    this is a feature for organization account only.

  3. Steve Middleton 0 Reputation points
    2025-10-23T10:45:36.21+00:00

    I have the same problem. I'm logged into a PC Windows account using my personal MS account (it's my PC), but also logged in under a corporate identity in Outlook and Teams (the same one). I cannot log out of the personal account in Teams. Every time I log out and open it again, it automatically logs me in to the personal account.

    I add the corporate account and then log out the personal one, but still see this 'sign in' button.

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