
Fix BitLocker Authentication Failed with TPM Not Working
If BitLocker prompts for a recovery key or shows "Authentication failed" and TPM is not working, ...

If BitLocker prompts for a recovery key or shows "Authentication failed" and TPM is not working, ...

You try to start a local service or application, and it fails with an error like 'port already in...

When you try to reset PowerShell settings using Set-ExecutionPolicy or Reset-I...

You set up Windows Security on one device—enabled tamper protection, added exclusions, configured...

You restart your PC to finish installing updates, but Windows Update gets stuck on a spinning cir...

You see a message that the BitLocker service is unavailable when you try to manage encryption, op...