Microsoft Windows Error Code 0xC0000075: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
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Error Code
0xC0000075
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error 0xC0000075, known as STATUS_LUIDS_EXHAUSTED, means Windows has run out of locally unique identifiers (LUIDs) used by some applications and drivers. This is rare but can cause crashes or startup failures. The fix usually involves restarting services or updating drivers.
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Tools You'll Need

How to Fix Error Code 0xC0000075

  1. Restart Your Computer

  2. Update Device Drivers

    Back up your important data before updating drivers.

  3. Restart the LSA Service

  4. Disable or Update Conflicting Software

    Do not disable antivirus permanently.

  5. Run System File Checker

  6. Perform a Clean Boot

  7. Check Event Viewer for Clues

  8. Reinstall Windows (Last Resort)

    Back up all data before reinstalling Windows.
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When to Call a Professional

If the error persists after trying all steps, especially if it appears during system startup or before you can log in, professional IT support may be needed to diagnose driver conflicts or hardware issues.

Frequently Asked Questions

What does error 0xC0000075 mean?
It means Windows has run out of locally unique identifiers (LUIDs), which are needed by certain applications and drivers to operate.
Can I fix error 0xC0000075 without reinstalling Windows?
Yes, most cases are resolved by restarting, updating drivers, or restarting the LSA service. Reinstall is a last resort.
Is error 0xC0000075 caused by malware?
It's not directly caused by malware, but malicious software that creates many LUIDs could contribute. A full antivirus scan is recommended.
Will upgrading to Windows 11 fix this error?
If the error is due to a software conflict or driver issue on Windows 10, upgrading may help, but it's not guaranteed. Fresh installation is more reliable.
What if the error occurs during boot and I can't log in?
Boot into Safe Mode (press F8 or Shift+Restart) and then apply the fixes. If Safe Mode works, a driver or startup program is the cause.

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