Laptop BitLocker failing on drive with volume shadow copy service errors

4.5

The VSS service itself is failing, blocking the encryption engine.

Symptoms
  • BitLocker error 0x80042301
  • Backup failure
  • Service won't start
Possible Causes
  • Registry corruption
  • Dependency failure
  • Malware

Step-by-Step Fix

1

Restart VSS Service

Restart "Volume Shadow Copy" in services.msc.

2

Reregister VSS DLLs

Run a script to reregister all VSS-related .dll files.

3

Check Event Viewer

Look for specific VSS error codes in the Application log.

When to See a Technician

VSS is a complex subsystem; reregistering the DLLs fixes 90% of service-level issues.

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