Medium
Operating Systems
✓ Solution Verified by Community (0+ upvotes)
How to fix error error-not-owner in Windows 11
ERROR_NOT_OWNER = 288
Fix based on community reports and expert analysis. Last verified: 2026-08-12
· How we verify fixes
| Error Code | error-not-owner |
|---|---|
| Affected System | Windows 11 (Microsoft) |
| Difficulty | Medium |
| Estimated Time | 20 min |
| Requires Admin Rights | ⚠️ Yes |
Solution Steps
- 1 First, identify the file or registry key that is causing the error. Check the application's error log or event viewer. Press Windows key + X and select 'Event Viewer'. Look under Windows Logs → Application for recent errors. Note the source and details.
- 2 If it's a file, take ownership. Right-click the file, select Properties, go to the Security tab, click Advanced, then click Change next to Owner. Enter your username, check 'Replace owner on subcontainers and objects', and click OK. This gives you full control, like becoming the owner of the house.
- 3 If it's a registry key, open Registry Editor (Win+R, type 'regedit', press Enter). Navigate to the key, right-click it, select Permissions, click Advanced, and change the owner to your account. Then grant yourself Full Control. Be careful: editing the registry can be risky, so only change permissions on the specific key causing the error.
- 4 After taking ownership, restart the application that caused the error. If it works, the issue is resolved.
- 5 If the error persists, run the application as Administrator. Right-click the executable, select Properties, go to Compatibility, and check 'Run this program as an administrator'. This ensures the program has the necessary privileges.
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