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Fix OneDrive Personal Vault Face ID Authentication on iPhone
Question details
The OneDrive iOS application fails to remember the Face ID preference for accessing the Personal Vault, prompting the user for alternative verification methods instead.
- Product
- Microsoft OneDrive for iOS
- Device & OS
- iOS
- Scenario
- Attempting to unlock the OneDrive Personal Vault using Face ID on an iPhone.
- Observed behavior
- The app repeatedly forgets the selected Face ID method, asking instead for Microsoft Authenticator verification, a passcode, and then prompting to set up Face ID all over again.
Verify that your iPhone's Face ID sensor is clean and working correctly for unlocking the device and other apps. Ensure you have your Microsoft account password and access to your backup Microsoft Authenticator app before modifying settings.
Update Apps and Refresh Your Sign-In State
Updating to the latest versions and refreshing your session often clears out temporary authentication state glitches.
Because this issue originates from the OneDrive app losing its authentication state, ensuring you have the latest bug fixes from Microsoft is the best first step. Signing out and back in forces the app to generate a fresh authentication token.
Open the App Store, search for OneDrive, and tap 'Update' if available. Then, navigate to your iPhone Settings > General > Software Update and install any pending iOS updates.
Open the OneDrive app, tap your profile icon at the top left, go to Settings, tap your account name, and select 'Sign Out'.
Restart your iPhone, open OneDrive, sign back into your Microsoft account, and attempt to access your Personal Vault. Follow the prompts to enable Face ID one more time.
Reinstall the OneDrive Application
A complete reinstallation removes corrupted cache files that might be blocking Face ID preferences from saving correctly.
Report the Bug to Microsoft Support
If the problem is a known bug in the current app build, escalating it helps Microsoft developers issue a patch.
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Frequently Asked Questions
Why does OneDrive keep asking for a passcode instead of Face ID for the Personal Vault?
This happens when the OneDrive app experiences an authentication state glitch, causing it to 'forget' your biometric preferences. It defaults back to your Microsoft Authenticator app or PIN code for security purposes.
Will reinstalling the OneDrive app delete my Personal Vault files?
No. Your files are safely stored in Microsoft's cloud servers, not locally within the app's cache. Deleting the app only removes local settings. Once you reinstall and log in, your files will be accessible again.
How do I check if Face ID is allowed for OneDrive in my iPhone settings?
Open your iPhone's Settings app, scroll down until you find 'OneDrive', tap on it, and ensure the toggle next to 'Face ID' is turned on.
Can I bypass the Microsoft Authenticator prompt for my Personal Vault?
If Microsoft Authenticator is set as your primary Two-Factor Authentication (2FA) method, you must use it when the app loses its Face ID token. You cannot bypass it, but resolving the app glitch will allow Face ID to take over for everyday access.
