Microsoft Windows Error Code 0xC000000C: How to Fix It

Easy 30-60 minutes Medium Severity Verified June 2026
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Error Code
0xC000000C
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
30-60 minutes
Error code 0xC000000C is a Windows system error indicating that a timer was already canceled unexpectedly. This can cause applications or the system to crash. It is often related to software conflicts, corrupt system files, or driver issues. Follow these steps to resolve the problem.
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Tools You'll Need

How to Fix Error Code 0xC000000C

  1. Restart Your Computer

  2. Run System File Checker (SFC)

    Do not close the Command Prompt window during the scan.

  3. Run DISM Tool

    This process may take several minutes.

  4. Update Drivers

  5. Perform Clean Boot

    This disables third-party services; re-enable them later.

  6. Check for Windows Updates

  7. Repair .NET Framework

  8. System Restore

    Your files will not be affected, but recent program installations may be removed.
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When to Call a Professional

If the error persists after all steps, consider a professional technician. It may indicate deeper hardware issues or malware that requires advanced tools.

Frequently Asked Questions

What causes error 0xC000000C in Windows?
This error usually stems from corrupt system files, faulty drivers, or software conflicts. It can also be triggered by malware or damaged Windows components.
Can error 0xC000000C be fixed without reinstalling Windows?
Yes, most cases can be resolved using built-in tools like SFC, DISM, and clean boot. Reinstalling Windows is a last resort.
Is error 0xC000000C malware-related?
It can be. Run a full antivirus scan as part of your troubleshooting. Use Windows Defender or a trusted third-party tool.
Will a system restore delete my files?
No, System Restore does not affect personal files. However, it removes recently installed programs, drivers, and system changes.
How long does the DISM command take?
Typically 15-30 minutes, but it can take longer depending on your system and internet speed.

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