According to our research, there are a few possible solutions that you can try:
- If you’re using the Teams desktop or mobile app, try using the web version: https://teams.microsoft.com/.
- Uninstall Teams from your device, then reinstall it.
- If you’re using a VPN to access Teams, turn it off and back on.
- Go to your Microsoft Account page, and navigate to Account info. That’s the section indicating alias and login preferences. Simply delete your mobile number as a means of login and check if the issue persists.
- Clear the Teams cache from your device.
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