Laptop BitLocker failing on drive with VSS service storage dm-crypt-key-derivation-microcode tampering
4.5
Device Mapper crypt KDF microcode has been tampered with.
Symptoms
- BitLocker error
- Access Denied
- Service crash
Possible Causes
- Hardware attack
- Malware
Step-by-Step Fix
1
Update CPU Microcode
Ensure the latest official version is loaded.
2
Check for Rootkits
Look for viruses that target microcode.
3
Run SFC
Repair system files.
When to See a Technician
Microcode tampering can allow an attacker to modify CPU instructions.
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