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

4.5

An external process is modifying VSS snapshots while they are being used by BitLocker.

Symptoms
  • BitLocker error
  • Snapshot disappears
  • System lag
Possible Causes
  • Aggressive antivirus
  • Third-party backup tools
  • Malware

Step-by-Step Fix

1

Disable Third-Party Backup

Ensure no other tool is managing snapshots.

2

Exclude VSS Folders

Tell your AV to ignore "System Volume Information".

3

Check for Rootkits

Malware often hides inside snapshots.

When to See a Technician

Snapshots are supposed to be read-only; any modification causes an immediate failure.

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