Laptop unable to use BitLocker on drive with VSS service encryption tampering

4.5

The internal encryption used for VSS metadata is tampered with.

Symptoms

BitLocker error
Metadata decryption failure
Service crash

Possible Causes

FIPS mode enabled/disabled
Corrupted keys

Step-by-Step Fix

1

Check FIPS Settings

Ensure "System cryptography: Use FIPS compliant algorithms" is consistent.

2

Clear VSS Shadows

Delete old snapshots that might have incompatible encryption.

3

Run SFC

Repair crypto binaries.

When to See a Technician

VSS uses internal crypto for some metadata; if the crypto provider is changed, it fails.

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