How to Fix 502 Bad Gateway in Command Prompt
If you see a 502 Bad Gateway error while using command prompt—for instance when ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security 502 Bad Gateway Error
If you're seeing a "502 Bad Gateway" error when opening Windows Security (also known as Windows D...
Fix 504 Gateway Timeout in Windows Security After Update
If you see a 504 Gateway Timeout error when opening Windows Security after a recent update, it us...
Windows Defender Network Error Permission Denied Fix
You see 'Network error: Permission denied' when trying to update or run Windows Defender. This us...
Fix Windows Defender Auto Start Not Working in Windows 10
If you find that Windows Defender isn't starting automatically when you boot Windows 10, your sys...
Apache Service Not Starting After Update: Common Fixes
After a system update, Apache may fail to start. This often shows as an error message when runnin...
Topic paths
Quick titles
How to Solve Pip Install Permission IssuesHow to Fix Windows Security Version Mismatch Configuration ErrorHow to Fix Windows Activation High Memory UsageFix OneDrive Sync Authentication Failed Error on Windows 11Windows Defender Error 0x80070643: Troubleshooting GuideTeams White Screen Loading Error: Troubleshooting GuideHow to Set Up Remote Desktop Offline Installer Without InternetResolving Outlook DNS Connection Errors