how to reinstall windows hello

Windows Hello is built into Windows, so there is no separate download or reinstall package.

To restore it:

1. Open Settings > Accounts > Sign-in options.
2. If Windows Hello Face, Fingerprint, or PIN is listed, remove the nonworking sign-in method and set it up again.
3. If fingerprint is missing or not working:
   • Open Device Manager.
   • Expand Biometric devices.
   • Right-click the fingerprint sensor and select Uninstall device.
   • Restart the PC so Windows can reinstall the driver.
4. If PIN is not working, reset it from Sign-in options by removing it and adding it again, or use I forgot my PIN if shown.
5. If biometric sign-in still does not work, check that the device is fully updated:
   • On Surface devices, open the Surface app > Help & support and use Check for updates.
   • Install available updates from Windows Update.

If Windows Hello has disappeared entirely, check whether the PC is signed in with the expected account under Settings > Accounts, then return to Sign-in options and set up a new PIN or biometric method.

Warning: removing PIN or biometric enrollment deletes the current Windows Hello setup and requires setting it up again afterward.

References:

• Windows Hello Enhanced Sign-in Security
• Windows 11
• Windows Hello no longer on the computer! - Microsoft Q&A How can I get it back? Any download source? Grateful for any suggestion.