Laptop unable to use BitLocker on drive with compressed files
4.5
BitLocker fails to enable because NTFS compression is active on some files.
Symptoms
- Error message
- Process cancels
- Conflict
Possible Causes
- NTFS compression conflict
- Disk space
Step-by-Step Fix
1
Disable Compression
Right-click drive > Properties > Uncheck "Compress this drive to save disk space".
2
Wait for Decompression
This can take a long time.
3
Enable BitLocker
Retry once decompression is 100% complete.
When to See a Technician
BitLocker and NTFS compression can coexist, but enabling BitLocker on a heavily compressed drive often fails.
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