Microsoft Windows Error Code 0xC0000122: How to Fix It
Medium 20-30 minutes Medium Severity
Verified June 2026
- Error Code
- 0xC0000122
- Brand
- Microsoft Windows
- Product Type
- operating_system
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 20-30 minutes
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Tools You'll Need
- Windows PC with admin access
How to Fix Error Code 0xC0000122
-
Boot into Safe Mode
-
Open System Properties
-
Change Computer Name
Ensure the new name is unique on your network and follows Windows naming rules. -
Check Hosts File for Conflicts
Editing the hosts file incorrectly can cause network issues. Backup the file first. -
Run System File Checker
Do not interrupt the scan; it may take up to 30 minutes.
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When to Call a Professional
If these steps fail, the issue may be deeper (e.g., corrupted registry). Contact Microsoft Support or a professional technician for advanced troubleshooting.Frequently Asked Questions
What causes error 0xC0000122 in Windows?
This error occurs when the computer name is invalid or conflicts with network settings, often after a name change or system update.
Can I fix error 0xC0000122 without Safe Mode?
If you can't boot normally, Safe Mode is necessary. However, if you can access the desktop, you can follow the same steps without Safe Mode.
Will resetting Windows fix error 0xC0000122?
Resetting Windows may fix the error, but it's a last resort. Try the steps above first as they are less invasive.
Is error 0xC0000122 related to malware?
Rarely, malware can corrupt system files leading to this error. Running a malware scan is a good precaution.
Do I need to reinstall Windows to fix this error?
Reinstalling usually resolves the issue, but it's excessive. The manual steps above work in most cases.