Microsoft Windows Error Code 0xC0000031: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
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Error Code
0xC0000031
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 0xC0000031, also known as STATUS_INVALID_QUOTA_LOWER, occurs when Windows detects that a disk quota limit is set lower than the current usage. This can prevent programs from starting or cause boot failures. The fix involves resetting quota settings or editing the registry.
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Tools You'll Need

How to Fix Error Code 0xC0000031

  1. Boot into Safe Mode

    If you cannot boot normally, use a Windows installation USB to access Repair options.

  2. Disable Disk Quota Management

  3. Reset Quota Entries in Registry

    Editing the registry incorrectly can cause system instability. Ensure you have a backup.

  4. Run Disk Check and System File Checker

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When to Call a Professional

If you cannot boot into Safe Mode or if registry edits do not resolve the issue, the error may indicate hard drive corruption or failing hardware. Contact a professional technician for data recovery or hardware diagnosis.

Frequently Asked Questions

What causes error 0xC0000031?
It is caused by a disk quota limit set lower than current disk usage, often due to corrupted quota entries or incorrect registry settings.
Can I fix error 0xC0000031 without reinstalling Windows?
Yes, usually by disabling disk quota management and resetting registry entries. Reinstallation is a last resort.
Will this error affect my personal files?
No, error 0xC0000031 typically prevents certain programs from running but does not directly damage files. However, always back up important data before troubleshooting.
Do I need a Windows installation disc to fix this?
Not necessarily, but if you cannot boot normally, a Windows installation USB can help access recovery tools.
Is error 0xC0000031 dangerous?
No, it's not a security threat. It is a system configuration error that can be fixed with the steps above.

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