Laptop BitLocker failing on drive with VSS service access violation

4.5

The VSS service is blocked from accessing its own memory or files.

Symptoms

BitLocker error
Service crash
Security warning

Possible Causes

Antivirus interference
Incorrect permissions
Malware

Step-by-Step Fix

1

Disable Antivirus

Ensure AV isn't blocking vssvc.exe.

2

Check Service Permissions

Ensure VSS is running as "Local System".

3

Scan for Malware

Some viruses target VSS to prevent backups.

When to See a Technician

Access violations in system services are often caused by over-aggressive security software.

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