Critical
Operating Systems
✓ Solution Verified by Community (0+ upvotes)
How to fix error 0x00000029 in Windows 11
Bug Check 0x00000029: SECURITY_SYSTEM — The security system detected an inconsistency.
Fix based on community reports and expert analysis. Last verified: 2026-08-12
· How we verify fixes
| Error Code | 0x00000029 |
|---|---|
| Affected System | Windows 11 (Microsoft) |
| Difficulty | Critical |
| Estimated Time | 45 min |
| Requires Admin Rights | ⚠️ Yes |
| Requires Reboot | 🔄 Yes |
Solution Steps
- 1 Run a full antivirus scan: Open Windows Security and run a full scan to rule out malware.
- 2 Run System File Checker: Open Command Prompt as admin and type 'sfc /scannow' to repair corrupted system files.
- 3 Run DISM tool: Type 'DISM /Online /Cleanup-Image /RestoreHealth' to repair the system image.
- 4 Check security policies: Open Local Security Policy (Win+R, type 'secpol.msc'). Look for any suspicious or misconfigured policies. If you're not sure, you can reset them to default by running 'secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /areas SECURITYPOLICY' in an elevated Command Prompt.
- 5 Check for Windows updates: Install any pending updates, as they may include security fixes.
- 6 Perform a clean boot to identify conflicting services: Use msconfig to disable non-Microsoft services and startup items, then restart.
- 7 If the error persists, use System Restore or reset your PC.
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