Microsoft Windows HRESULT Error Code 0x80070004: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
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Error Code
0x80070004
Brand
Microsoft Windows
Product Type
hresult
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error 0x80070004 indicates that Windows has reached its limit for open file handles, often caused by a memory leak, malfunctioning software, or outdated drivers. This error can interrupt installations, program launches, or system updates. Follow these steps to close unnecessary processes, increase the file handle limit, and resolve the underlying cause.
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Tools You'll Need

How to Fix Error Code 0x80070004

  1. Restart Your Computer

  2. Scan for Malware

  3. Check for Memory Leaks in Task Manager

  4. Update Drivers and Windows

    Back up important data before updating drivers.

  5. Increase the File Handle Limit via Registry

    Incorrect registry edits can cause system instability. Proceed with caution.

  6. Run System File Checker and DISM

  7. Disable Startup Programs

  8. Check Event Viewer for Detailed Errors

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When to Call a Professional

If the error persists after all steps, or if you are uncomfortable editing the registry, contact a professional technician to avoid data loss or system damage.

Frequently Asked Questions

What does error 0x80070004 mean?
Error 0x80070004 is a Windows HRESULT error that translates to 'ERROR_TOO_MANY_OPEN_FILES'. It means the operating system has exceeded its limit for open file handles, often due to a memory leak in software or drivers.
Can error 0x80070004 be caused by malware?
Yes, malware can open many file handles to exhaust system resources. Running a full antivirus scan is a recommended first step.
How do I increase the file handle limit in Windows?
You can increase the limit by editing the registry: navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters and create a DWORD named 'MaxMpxCt' with value 65535 (decimal). Restart your PC.
Is it safe to edit the registry to fix this error?
Editing the registry carries risks if done incorrectly. Always back up the registry before making changes. If you're unsure, seek professional help.
Will restarting my computer fix error 0x80070004?
A restart often temporarily resolves the error by clearing open handles, but the underlying cause (e.g., memory leak) will likely return. Follow the full guide to fix it permanently.

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