Microsoft Windows Error Code 0xC0000074: How to Fix It

Easy 20-45 minutes Medium Severity Verified June 2026
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Error Code
0xC0000074
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
20-45 minutes
Error 0xC0000074 indicates that a program requested too many LUIDs (Locally Unique Identifiers), causing a resource allocation failure. This typically occurs due to a memory leak, driver conflict, or software bug. Follow these steps to resolve the issue.
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Tools You'll Need

How to Fix Error Code 0xC0000074

  1. Restart Your Computer

  2. Update Windows and Drivers

    Back up your important data before updating drivers.

  3. Run System File Checker (SFC)

    Do not close the Command Prompt until the scan completes.

  4. Perform a Clean Boot

    This disables non-Microsoft services temporarily.

  5. Check for Memory Leaks

    Ending critical system processes may cause instability.

  6. Repair or Reinstall the Problematic Application

  7. Perform a System Restore

    This will undo recent system changes but your personal files remain intact.
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When to Call a Professional

If none of these steps resolve the error, or if you suspect a hardware issue (e.g., failing RAM), contact a qualified technician or Microsoft Support.

Frequently Asked Questions

What does error 0xC0000074 mean?
It means a program requested too many LUIDs (Locally Unique Identifiers), often due to a memory leak or driver conflict.
Can outdated drivers cause error 0xC0000074?
Yes, outdated or corrupt drivers, especially graphics drivers, can trigger this error.
Is error 0xC0000074 serious?
It is a software-level error and usually not critical, but it can prevent apps from running. It's easily fixable with the steps above.
Will a clean boot fix error 0xC0000074?
A clean boot helps identify if a third-party program is causing the error. It may resolve it if the culprit is disabled.
How do I check for LUID leaks in Windows?
You can use Task Manager to monitor handle counts or use Performance Monitor (perfmon) to track LUID allocations, but the most practical fix is to update software and drivers.

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