Scenario
A user enrolls in MFA and then Microsoft Teams repeatedly asks for sign-in or closes the prompt after entering credentials.
Recommended Resolution Path
- Verify Conditional Access is not forcing a registration step the user never completed.
- Clear Teams cached app data and the WAM token cache, then restart the device.
- Test sign-in at office.com to confirm tenant-side auth is healthy.
- If the user recently changed phones, confirm Authenticator backup and re-registration were completed.
Technician Notes
Confirm the business impact, document the root cause, and capture any preventative follow-up in the PSA or client knowledge base.
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