Laptop BitLocker failing on drive with VSS service writer tampering
4.5
A VSS writer has been replaced by a malicious or corrupted version.
Symptoms
- BitLocker error
- Writer shows "Failed"
- Security alert
Possible Causes
- Malware
- Botched software install
Step-by-Step Fix
1
Check Writer Binaries
Verify the digital signatures of services with VSS writers.
2
Run SFC /Scannow
Restore original Windows writers.
3
Uninstall Suspicious Apps
Remove any app that recently added a VSS writer.
When to See a Technician
Writers are the bridge between apps and VSS; if the bridge is tampered with, data is at risk.
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