Laptop unable to use BitLocker on drive with file name length limit
4.5
Files with extremely long names (over 255 chars) cause the encryption engine to crash.
Symptoms
- Encryption stops on specific file
- Error 0x80070057
- System hang
Possible Causes
- Deeply nested folders
- Automated backup scripts
Step-by-Step Fix
1
Shorten File Names
Rename files that exceed the limit.
2
Move Folders
Move deep subfolders closer to the root directory.
3
Enable Long Paths
Enable "LongPathsEnabled" in Registry (might not help BitLocker).
When to See a Technician
NTFS has a 255-character limit for names; exceeding this can break many Windows services.
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