Microsoft Windows Error Code 0xC0000120: How to Fix It
Medium 30-60 minutes Medium Severity
Verified June 2026
- Error Code
- 0xC0000120
- Brand
- Microsoft Windows
- Product Type
- operating_system
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 30-60 minutes
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Tools You'll Need
- Windows installation media (optional)
How to Fix Error Code 0xC0000120
-
Run System File Checker (SFC)
Do not close the Command Prompt during the scan. -
Run DISM Tool
-
Check for Software Conflicts
-
Update Drivers and Windows
Back up your data before major updates. -
Perform System Restore
-
Reinstall or Reset Windows
Back up all important data before resetting or reinstalling.
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When to Call a Professional
If you're uncomfortable with command-line tools or system-level changes, or if the error persists after all steps, contact a professional technician.Frequently Asked Questions
What does error code 0xC0000120 mean?
It means an operation was cancelled due to a system error, often caused by corrupted files or driver issues.
Can error 0xC0000120 be caused by malware?
Yes, malware can corrupt system files leading to this error. Run a full antivirus scan.
Will I lose data if I reset Windows?
If you choose 'Keep my files', your personal files are saved, but apps and settings are removed. Always back up first.
How do I boot into Safe Mode?
Restart your PC and press F8 repeatedly before Windows starts. Alternatively, hold Shift while clicking Restart in the Start menu.
Is there a quick fix for this error?
Try running SFC and DISM scans first; they often resolve the issue without data loss.