Laptop BitLocker failing on drive with VSS registry corruption
4.5
Corrupted registry keys for VSS writers or providers block encryption.
Symptoms
- BitLocker error
- VSS writers missing
- Service crash
Possible Causes
- Failed updates
- Malware
Step-by-Step Fix
1
Check Registry Keys
Verify HKLMSoftwareMicrosoftWindows NTCurrentVersionAsrWriters.
2
Import Working Keys
Export VSS keys from a healthy PC and import them.
3
Run SFC /Scannow
Repair system registry entries.
When to See a Technician
The registry is where VSS finds its writers; if the keys are gone, the writers are "invisible".
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