Windows Security 502 Bad Gateway: Troubleshooting Checklist
If you see a 502 Bad Gateway error when opening Windows Security, it usually means the app can't ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Update Migration Not Working After Feature Update
After installing a Windows feature update (e.g., version 22H2 or 23H2), some users find that the ...
How to Find the Windows Activation Log File in Windows 11
If Windows 11 shows an activation error or you need to check activation history, the activation l...
Windows Defender Real-Time Protection Off but Still Scanning: Fix
You turn off real-time protection in Windows Defender, but scans still run. This can be confusing...
Fix ImageMagick 'convert' Not Recognized in PHP exec()
If you're seeing an error like convert not recognized when trying to use ImageMagick...
Fix Windows Update Connection Refused Due to Proxy Settings
When Windows Update reports a 'connection refused' error, it's often due to a misconfigured proxy...
Topic paths
Quick titles
Windows Defender Permission Denied: How to FixTroubleshoot Remote Desktop Connection RefusedHow to Resolve 502 Gateway Error in TerminalFix Stuck Windows 10 Activation (0% Progress)Windows Defender Token Expired After Update FixWindows Defender Won't Turn On: 0x80070422 TroubleshootingHow to Fix Windows Defender Firewall Blocked ErrorIIS 502 Error Caused by PowerShell: Troubleshooting