Microsoft Windows Error Code 0xC000008C: How to Fix It

Medium 30 minutes to 2 hours High Severity Verified June 2026
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Error Code
0xC000008C
Brand
Microsoft Windows
Product Type
operating_system
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
30 minutes to 2 hours
Error 0xC000008C on Windows indicates a program tried to access an array index outside its defined range, often due to corrupted system files, faulty drivers, or software bugs. This high-severity issue can cause crashes or blue screens. Follow the steps below to resolve it.
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How to Fix Error Code 0xC000008C

  1. Restart your computer in Safe Mode

  2. Run System File Checker (SFC)

    Do not close the Command Prompt until the scan finishes.

  3. Run DISM tool

    This may take 15-30 minutes. Do not interrupt.

  4. Update or reinstall problematic drivers

  5. Check for Windows updates

  6. Perform a clean boot

  7. Run Memory Diagnostics

    Back up your data before running memory tests.

  8. Reset or reinstall Windows (last resort)

    Back up all important data before resetting.
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When to Call a Professional

If you've tried all steps above and the error persists, or if you're uncomfortable with command-line tools, consult a professional technician. Data loss or system instability may require expert recovery.

Frequently Asked Questions

What causes error 0xC000008C in Windows?
This error typically results from a program accessing an array index outside its defined bounds, often due to corrupted system files, outdated or faulty drivers, bad memory, or software bugs.
Can error 0xC000008C damage my computer?
It can cause crashes and data loss, but it is usually fixable without permanent damage. Prompt troubleshooting prevents further issues.
Does Safe Mode help fix error 0xC000008C?
Yes, Safe Mode loads minimal drivers and services, which can help you run repair tools like SFC and DISM without interference from background processes.
Will system restore fix error 0xC000008C?
If the error started after a recent change, a system restore to an earlier point may resolve it. Go to Control Panel > Recovery > Open System Restore.
How often does this error occur?
It's relatively rare but can happen with poorly coded software, memory corruption, or driver conflicts. Regular updates reduce the risk.

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