Microsoft Windows Error Code 0xC0000139: How to Fix It

Medium 30 minutes to 1 hour Medium Severity Verified June 2026
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Error Code
0xC0000139
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30 minutes to 1 hour
Error code 0xC0000139, also known as STATUS_ENTRYPOINT_NOT_FOUND, means a required function or DLL entry point is missing or corrupted. This often prevents programs or Windows itself from starting. The fix typically involves repairing system files, reinstalling the affected application, or restoring missing DLLs.
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Tools You'll Need

How to Fix Error Code 0xC0000139

  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 may take 15-30 minutes. Ensure a stable internet connection.

  4. Reinstall the Problematic Application

  5. Perform a Clean Boot

    After troubleshooting, re-enable all services and startup items to avoid system instability.

  6. Check for Windows Updates

  7. Restore Missing DLL Files

    Only download DLLs from official Microsoft sources to avoid malware.
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When to Call a Professional

If the error persists after all steps or if Windows fails to boot, you may need a professional technician to perform advanced system recovery or reinstall Windows.

Frequently Asked Questions

What causes error 0xC0000139?
This error is caused by a missing or corrupted DLL entry point. It can happen after a failed software update, malware infection, or accidental deletion of system files.
Can I fix error 0xC0000139 without reinstalling Windows?
Yes, in most cases. Running SFC and DISM often resolves the issue without a full reinstall. If those fail, a repair installation using Windows installation media may work.
Is error 0xC0000139 dangerous?
It is not dangerous by itself, but it can prevent programs or Windows from starting. It might indicate malware, so run a security scan if you suspect infection.
Will a system restore fix error 0xC0000139?
If you have a restore point from before the error appeared, a system restore can revert system files to a working state and fix the issue.
Do I need to reinstall Windows for this error?
Rarely. Only consider reinstalling Windows if all other troubleshooting steps fail and the error prevents normal operation.

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