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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