Microsoft Windows Error Code 0xC000001F: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
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Error Code
0xC000001F
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 0xC000001F, also known as STATUS_INVALID_VIEW_SIZE, indicates that the operating system detected an invalid view size in memory management. This error typically occurs during Windows startup or when running certain applications, often due to driver conflicts, corrupted system files, or memory issues. The following steps will help you resolve the error.
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Tools You'll Need

How to Fix Error Code 0xC000001F

  1. Boot into Safe Mode

    If you cannot access Safe Mode, you may need a Windows installation media to access recovery tools.

  2. Run System File Checker (SFC) and DISM

  3. Update or Roll Back Drivers

  4. Check for Memory Issues

    Back up your data before running memory diagnostics as the system will restart.

  5. Perform a System Restore

    System Restore will not affect your personal files, but may remove recently installed programs.

  6. Repair Windows Installation

    Ensure you have a full backup before attempting a repair installation or reset.
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When to Call a Professional

If you have tried all steps including Startup Repair and still see error 0xC000001F, or if you suspect hardware failure (e.g., RAM or hard drive), consult a professional technician. Data recovery may be needed if you cannot access your files.

Frequently Asked Questions

What causes error 0xC000001F in Windows?
This error is typically caused by corrupted system files, outdated or incompatible drivers (especially graphics or chipset drivers), faulty RAM, or a corrupted Windows update. It can also appear after a failed overclocking attempt.
Can I fix error 0xC000001F without reinstalling Windows?
Yes, most cases can be resolved without a full reinstall by booting into Safe Mode, running SFC and DISM scans, updating drivers, and performing a System Restore. A repair installation (in-place upgrade) is also an option.
Is error 0xC000001F a sign of hardware failure?
It can be. If software fixes fail, the error may point to failing RAM or a failing hard drive. Run Windows Memory Diagnostic and check your hard drive's health using CHKDSK or third-party tools.
How do I boot into Safe Mode if Windows won't start?
Interrupt the boot process three times (force shutdown during boot) to trigger Automatic Repair, then select 'Advanced options' > 'Troubleshoot' > 'Advanced options' > 'Startup Settings' > 'Restart' > press 4 or F4 for Safe Mode. Alternatively, use a Windows installation USB.
What is STATUS_INVALID_VIEW_SIZE?
It is an internal Windows error code indicating that the size of a memory-mapped file view is invalid. This often occurs when a driver or application makes an invalid memory mapping request.

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