Microsoft Windows Error Code 0xC0000004: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
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Error Code
0xC0000004
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 0xC0000004 is a Windows system error that indicates a mismatch between the expected and actual size of a data buffer (STATUS_INFO_LENGTH_MISMATCH). It can appear as a blue screen or application crash. This guide covers common software-related fixes.
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How to Fix Error Code 0xC0000004

  1. Run System File Checker (SFC)

  2. Run DISM Tool

  3. Check for Windows Updates

  4. Perform a Clean Boot

    Disabling services may affect functionality; re-enable after testing.

  5. Repair Corrupted User Profile

    Back up important data before making profile changes.

  6. Check for Third-Party Software Conflicts

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When to Call a Professional

If the error persists after performing all steps, or if you are uncomfortable editing the registry (though no registry editing is required here), consider contacting a professional technician.

Frequently Asked Questions

What is error code 0xC0000004?
Error 0xC0000004 is a Windows system error indicating a buffer size mismatch (STATUS_INFO_LENGTH_MISMATCH). It can cause blue screens or application crashes.
Can this error be caused by hardware?
While rare, faulty RAM or storage can cause this error. Run Windows Memory Diagnostic and check your hard drive for errors using chkdsk.
Will I lose data by fixing this error?
No, the fixes described do not delete personal files. However, it's always recommended to back up your data before troubleshooting.

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