Windows Defender 502 Bad Gateway: Troubleshooting Checklist
If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Remote Desktop Error 0x204 After Windows Update
If you see error 0x204 when trying to connect to a remote desktop after a Windows update, the con...
Fix WinSCP Permission Denied Error Code 3
When you see Error code 3: Permission denied in WinSCP, it means the server reje...
Fix Chrome Sync Permission Denied Error
You open Chrome hoping to pick up your bookmarks and passwords from another device, but instead s...
Where to Find Windows Terminal Crash Logs
When Windows Terminal crashes, it doesn't always show an error message. The crash logs are stored...
How to Fix Microsoft Teams 404 Not Found Error
When Microsoft Teams shows a 404 Not Found error, it usually means the app can't reach the server...
Topic paths
Quick titles
OneDrive Sync 504 Error Troubleshooting GuideFix Windows Defender Access Denied Error When Running Command Prompt as AdminHow to Fix Permission Denied in Microsoft Store on UbuntuResolve Chrome Profile Port ConflictHow to Resolve Windows Activation 502 ErrorFix Microsoft Store After System RestoreResolve Windows Security Permission DeniedFix Windows Security Cannot Connect to the App