Laptop BitLocker failing on drive with VSS service folder tampering

4.5

The "System Volume Information" folder has been tampered with.

Symptoms

BitLocker error
Access Denied
Service crash

Possible Causes

Manual permission changes
Malware

Step-by-Step Fix

1

Restore Folder Permissions

Use Icacls to reset permissions.

2

Scan for Malware

Look for viruses that hide in system folders.

3

Run chkdsk

Fix folder structure errors.

When to See a Technician

Never manually touch the System Volume Information folder; it is for system use only.

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

The VSS metadata files are being modified by an unauthorized process.

Laptop unable to use BitLocker on drive with VSS permission errors

Incorrect NTFS permissions on the "System Volume Information" folder block VSS.