Teams phone won't sign in
Fix sign-in problems on desk phones.
| What you need | Affects |
|---|---|
| The phone, and the user's Microsoft 365 sign-in | That desk phone |
1. On the phone
- Check the date and timeWrong date or time stops sign-in.
- RestartRestart the phone and try the device code again.
- UpdateInstall any Teams or firmware update offered.
2. In Microsoft 365
- Check access policiesMake sure a conditional access policy isn't blocking the phone.
- Check the passwordMake sure the account password hasn't expired.
Troubleshooting
| Problem | Likely cause and fix |
|---|---|
| Sign-in loops | Factory reset the phone and sign in again. |