Laptop Network Unlock failing to authorize

4.5

The laptop communicates with the server but is rejected.

Symptoms
  • Error on boot
  • Fallback to PIN
  • Server log error
Possible Causes
  • Untrusted certificate
  • MAC address mismatch
  • Policy error

Step-by-Step Fix

1

Check Certificate Trust

Ensure the client trusts the Network Unlock certificate.

2

Verify GPO

Ensure the correct certificate thumbprint is in the GPO.

3

Check Server Logs

Look for "BitLocker-NetworkUnlock" events on the server.

When to See a Technician

Authorization failures are usually due to the client not having the correct public key for the unlock server.

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