Microsoft Windows Error Code 0xC0000087: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
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Error Code
0xC0000087
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 0xC0000087 (STATUS_SECTION_NOT_EXTENDED) indicates that Windows cannot extend a memory section during boot or operation, often caused by corrupted system files, disk errors, or incompatible drivers. This guide provides step-by-step solutions to resolve the issue and restore normal functionality.
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Tools You'll Need

How to Fix Error Code 0xC0000087

  1. Boot into Safe Mode

  2. Run System File Checker (SFC)

    Do not close the Command Prompt window until the scan finishes.

  3. Run DISM to Repair System Image

    Ensure you have a stable internet connection as DISM downloads files from Windows Update.

  4. Check Disk for Errors

    Back up important data before running chkdsk, as it may cause data loss in rare cases.

  5. Update or Roll Back Drivers

  6. Perform a System Restore

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

  7. Reset or Reinstall Windows

    Back up all important data before resetting or reinstalling Windows, as it may delete files.
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When to Call a Professional

If you are unable to boot into Safe Mode or access the recovery environment, or if the error persists after trying all steps, consider contacting a professional technician or Microsoft Support for assistance.

Frequently Asked Questions

What does error 0xC0000087 mean on Windows?
Error 0xC0000087 (STATUS_SECTION_NOT_EXTENDED) indicates that Windows cannot allocate or extend a memory section, often due to corrupted system files, disk errors, or incompatible drivers.
Can error 0xC0000087 cause data loss?
The error itself does not cause data loss, but some fixes (like chkdsk or system reset) may pose a risk. Always back up important data before attempting repairs.
How do I boot into Safe Mode if I can't get past the error?
Interrupt the boot process three times: turn on your PC, and when Windows starts loading, press and hold the power button for 5-10 seconds to force shutdown. Repeat this three times. On the fourth boot, you'll see the 'Automatic Repair' screen. Click 'Advanced options' > 'Troubleshoot' > 'Advanced options' > 'Startup Settings' > 'Restart'. Then press 4 or F4 for Safe Mode.
Is this error related to hardware failure?
While usually software-related, faulty RAM or SSD/HDD can sometimes cause this error. Run a memory diagnostic (Windows Memory Diagnostic) and check your drive's health (CrystalDiskInfo) if software fixes fail.
Do I need to reinstall Windows to fix error 0xC0000087?
Reinstalling Windows is a last resort. Try SFC, DISM, chkdsk, and System Restore first. If none work, a reset or clean installation should resolve the issue.

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