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How Do I Fix a TPM / Office Sign-in Error?
TPM / Office sign-in error 80090016 when opening Microsoft 365 apps (e.g., Outlook, Teams, OneNote), commonly after hardware repairs (e.g., system board replacement).
Solution: Disconnect the work/school account from Windows, then sign back into Office 365.
- Close all Office apps.
- Open Settings > Accounts > Access work or school.
- Select your UVID@luc.edu account and click Disconnect. Confirm removal.
- Restart Device
- Reopen any Office app and sign in with UVID@luc.edu to re-register the device and rebuild credentials.
- Verify Outlook/Teams connect without the 80090016 error.
How do I remove and re-add a work/school account? (Windows 10)
Windows 10 – detailed path to remove and re-add the work/school account for the 80090016 TPM error.
Solution: Use the Windows 10 account access path to remove the profile before any uninstall/reinstall attempts.
- Ensure all Office apps are closed.
- Go to Start > Settings > Accounts > Access work or school.
- Click the connected UVID@luc.edu account > Disconnect > Confirm.
- Restart Device
- Launch an Office app and sign in again with UVID@luc.edu.
- Confirm activation and that Outlook/Teams load normally.
How do I resolve the error on Windows 11?
Windows 11 – equivalent steps when encountering 80090016 TPM error after repair or profile corruption.
Solution: Use the Windows 11 path to disconnect/reconnect the work/school account, then sign back into Office.
- Close all Office apps and sign out of the Office profile if prompted.
- Open Settings (Win + I) > Accounts > Access work or school.
- Select the UVID@luc.edu account > Disconnect > Confirm removal.
- Restart Device
- Open any Office app and sign in with UVID@luc.edu to restore the trust with TPM.
- Test Outlook and Teams to ensure the error no longer appears.
Additional information:
• The 80090016 TPM error often follows hardware changes (e.g., motherboard/TPM state changes) that invalidate previous device credentials. Reconnecting the account refreshes the device trust and keys.
• Try this procedure before uninstalling/reinstalling Microsoft 365 apps.
• If the error persists: ensure the device has network connectivity, then repeat the steps and consider a full reboot between steps 3 and 4. If still failing, escalate for advanced remediation (e.g., review AAD/Workplace Join status, clear stale credentials) per ITS procedures.