Solution:
Root Cause: Windows Biometric Framework Database Corruption Windows stores enrolled biometric template hashes in an encrypted local database located under
C:\Windows\System32\WinBioDatabase. When feature updates alter security encryption keys or crash during logoff initialization,
.DAT database files can become corrupted. The Windows Biometric Service (
WbioSvc) fails to read or overwrite corrupted database slots, causing crashes in the Settings app.
Diagnostic Verification: Inspect Event Viewer under Applications and Services Logs > Microsoft > Windows > Biometrics > Operational. Look for Event ID 1001 or 1002 indicating database read/write failures. Step-by-Step Fix: 1 Stop the Windows Biometric Service (WbioSvc):
Open Admin PowerShell and run: Copy
powershell
Stop-Service -Name WbioSvc -Force
2 Backup and Clear WinBioDatabase Directory:
Execute the following commands in PowerShell: Copy
powershell
$DbPath = "$env:SystemRoot\System32\WinBioDatabase"
Copy-Item -Path "$DbPath\*.DAT" -Destination "$env:TEMP\WinBioBackup" -Force
Remove-Item -Path "$DbPath\*.DAT" -Force
3 Restart Biometric Service to Re-create Clean Database Files:
Run: Copy
powershell
Start-Service -Name WbioSvc
4 Re-enroll Fingerprint Biometrics:
Open Settings > Accounts > Sign-in options > Windows Hello Fingerprint . Click Set up and follow prompts to record fresh fingerprint templates. Prevention & Long-Term Monitoring: Always remove and re-enroll fingerprint biometrics prior to initiating major Windows build upgrades.