Laptop BitLocker failing on drive with VSS service certificate tampering

4.5

The digital signature for VSS components is invalid or missing.

Symptoms

BitLocker error
Service won't start
Security warning

Possible Causes

Expired certificates
Root CA corruption
Malware

Step-by-Step Fix

1

Update Root Certificates

Run Windows Update to get the latest CA list.

2

Check File Signature

Right-click vssvc.exe > Digital Signatures > Details.

3

Run SFC

Restore original, signed binaries.

When to See a Technician

Windows will not run critical services if their digital signatures are invalid.

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