Fix Windows Defender DNS Error Permission Denied
You run a scan or update in Windows Defender and see an error like "DNS error permission denied" ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security Not Working in Windows 11
If Windows Security won't open, stays blank, or crashes on Windows 11, the problem is often a cor...
Windows Security Version Mismatch: Troubleshooting Checklist
If you see an error message saying Windows Security has a version mismatch, or the Security Cente...
How to Fix Cloudflare Error 525: SSL Handshake Failed
When you see Cloudflare error 525, it means the SSL handshake between Cloudflare and your origin ...
Fix BitLocker Authentication Failed with TPM Not Working
If BitLocker prompts for a recovery key or shows "Authentication failed" and TPM is not working, ...
Fix Windows Activation 502 Bad Gateway After Upgrade
After a Windows upgrade, you might see a '502 Bad Gateway' error when trying to activate. This us...
Topic paths
Quick titles
Resolve Windows Search Proxy IssuesReset Windows Security App Without Losing DataResolve GitHub Actions Permission Denied When PushingResolve Windows Update 502 Bad Gateway with Proxy FixesAnsible SSH Host Key Error TroubleshootingFix PowerShell Settings Reset After Windows UpdateHow to Fix Chrome Profile ProblemsFix OneDrive Sync Timeout on Windows 10