Microsoft Windows Error Code 0xC000021E: How to Fix It

Medium 30-60 minutes High Severity Verified June 2026
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Error Code
0xC000021E
Brand
Microsoft Windows
Product Type
operating_system
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 0xC000021E, also known as STATUS_DRIVER_CANCEL_TIMEOUT, indicates that a driver failed to respond to a cancel request within the expected time. This critical error often causes Windows to crash or display a blue screen. It is typically triggered by faulty drivers, corrupted system files, or incompatible hardware. Follow the steps below to diagnose and resolve this issue.
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Tools You'll Need

How to Fix Error Code 0xC000021E

  1. Boot into Safe Mode

    Back up important data if possible before proceeding.

  2. Roll Back or Uninstall Recent Drivers

  3. Run System File Checker (SFC)

  4. Check for Windows Updates

  5. Perform a Clean Boot

  6. Use Driver Verifier (Advanced)

    Driver Verifier can cause system crashes; use only if comfortable with advanced troubleshooting.
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When to Call a Professional

If you are unable to boot into Safe Mode, or if the error persists after all steps, contact a professional technician. Persistent driver issues may indicate hardware failure (e.g., faulty SSD or RAM).

Frequently Asked Questions

What causes Windows error 0xC000021E?
This error is caused by a driver that did not respond to a cancel request in time. Common causes include outdated or incompatible drivers, corrupted system files, and recently installed hardware or software.
Can I fix error 0xC000021E without reinstalling Windows?
Yes, in most cases you can fix it by booting into Safe Mode and rolling back or uninstalling problematic drivers, running SFC, and cleaning booting. Reinstalling Windows is a last resort.
Is error 0xC000021E the same as a blue screen of death?
Yes, this error typically results in a blue screen (BSOD) with the message 'DRIVER_CANCEL_TIMEOUT'. It causes Windows to crash and restart.
Does error 0xC000021E indicate hardware failure?
Not necessarily, but if driver troubleshooting fails, it could indicate failing hardware, such as a hard drive, RAM, or motherboard. Run hardware diagnostics if software steps don't resolve it.
How do I prevent this error in the future?
Keep Windows and drivers updated. Avoid installing drivers from untrusted sources. Use System Restore points before making major changes. Regularly run SFC and DISM scans.

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