Medium Operating Systems ✓ Solution Verified by Community (0+ upvotes)

How to fix error error-write-fault in Windows 11

ERROR_WRITE_FAULT = 29

65% success rate
👥 0+ users verified
📅 Updated: 2026-08-12
⏱️ 30 min read
Fix based on community reports and expert analysis. Last verified: 2026-08-12 · How we verify fixes
Error Codeerror-write-fault
Affected SystemWindows 11 (Microsoft)
DifficultyMedium
Estimated Time30 min
Requires Admin Rights⚠️ Yes

Solution Steps

  1. 1 Check if the disk is write-protected: Some USB drives and SD cards have a physical lock switch. Ensure it's in the unlocked position. Also, check if the drive is full; delete unnecessary files or use a different drive.
  2. 2 Run a disk check to fix file system errors: Open Command Prompt as administrator (Windows key + R, type 'cmd', press Ctrl+Shift+Enter). Type 'chkdsk X: /f' (replace X with the drive letter) and press Enter. This will scan and repair file system issues that might block writes.
  3. 3 Check permissions: Right-click the drive or folder, select Properties, go to the Security tab, and ensure your user account has 'Full control' or 'Write' permission. If not, click Edit and grant yourself write access.
  4. 4 If the error occurs on an internal drive, check for bad sectors: Run 'chkdsk C: /r' (replace C: with the system drive) to locate and mark bad sectors. This may require a restart.
  5. 5 If the error persists, try writing to a different location or drive to isolate the problem. If it's a network drive, check network connectivity and permissions.

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