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You can try the following steps.
If it's a Windows device: 1. Quit Teams and go to Windows Settings > Accounts 2. Select Access Work and School > Select your
work account> Click Disconnect 3, then go to Email & Accounts, select your work account again, and click Remove.
- Reopen Teams and see if you can sign in with a different account.
You can also try clearing the cached credentials on your device by following the steps in this article: https://thecloudtechnologist.com/2020/02/03/cle...
If it's a Mac device, try clearing the Teams cache:
https://eshop.macsales.com/blog/68682-clear-mic...
Disclaimer: The links above are non-Microsoft websites.
The sites seem to provide accurate, secure information. Look for ads on the websites that can promote products that are often classified as PUP (Potentially Unwanted Products). Thoroughly research each product advertised on the sites before deciding to download and install it.