Changing between multiple Microsoft Teams accounts within the app or browser
Thank you for posting your question in the Microsoft Q&A forum.
Based on your description, it sounds like you have both a personal Microsoft account and a work/business account using the same email address. This can sometimes cause sign-in conflicts in Microsoft Teams, where Teams repeatedly picks up the personal account instead of allowing you to sign in with the business account.
As a first step, I recommend changing the email alias of your personal Microsoft account to avoid the conflict:
- Go to the Microsoft account aliases page: Manage account aliases
- Sign in with your personal Microsoft account (not your work account).
- Select Add email.
- Create a new email alias.
- Set the new alias as your Primary Alias.
- After the change is completed, use the new email address when signing in to your personal Microsoft account.
You can also refer to this Microsoft article for additional guidance: Add or remove an email alias in Outlook.com
After changing the personal account alias, please clear the Microsoft Teams credentials, then try signing in again with your business account:
Remove cached Teams credentials
- Close Teams.
- Open Control Panel > Credential Manager.
- Select Windows Credentials.
- Remove any entries related to:
- Microsoft Teams
- Microsoft Office
- Microsoft 365
- Restart the computer.
- Launch Teams and sign in with your business account.
Thank you again for your time and understanding. I really appreciate your patience, and I'm here to help. Looking forward to your response!
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