Laptop unable to use BitLocker on drive with VSS service race condition

4.5

VSS components are out of sync, causing random encryption failures.

Symptoms

Intermittent BitLocker errors
Random backup failures
Event ID 8193

Possible Causes

High system load
Timing issues

Step-by-Step Fix

1

Reduce System Load

Close all other apps.

2

Update Windows

Microsoft often releases patches for VSS timing issues.

3

Retry Encryption

Race conditions are often solved by simply trying again.

When to See a Technician

Race conditions are hard to debug; a clean, quiet system is the best environment for encryption.

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