Nginx 502 Bad Gateway: Troubleshooting Checklist
If you're seeing a 502 Bad Gateway from nginx, it usually means nginx can't reach the upstream se...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Unlock a File Locked by Windows Security
You try to open or delete a file, and Windows says it's locked by Windows Security. This usually ...
Fix Windows Update 404 Not Found After Clean Install
After performing a clean install of Windows, you may encounter a '404 Not Found' error when tryin...
Unlock a File Locked by System Command Prompt
You try to delete or move a file, but Windows says it's open in 'System' or 'Command Prompt'. Thi...
Fix Windows Activation Service Unavailable After Update
After a Windows update, you may see an error saying the activation service is unavailable. This u...
How to Fix Outlook Taking Too Long to Open Emails
If you click an email in Outlook and it takes several seconds or more to open, you're not alone. ...
Issue queue
SitemapHow to Resolve Windows 10 Activation Rate Limit Error
Windows Search Access Denied Error Fix
How to Fix Windows Security Service Unavailable Error
Troubleshoot Chrome Extension Permission Denied
Troubleshoot Windows Security Launch Failure
Windows Security High RAM Fix
Group Policy Preventing BitLocker Auto-Unlock? Here's Help
Fixing NGINX 502 Bad Gateway Permission Denied
Chrome Profile Error on Windows 10: Fix Guide
Chrome Broken After Update? Here's How to Fix It
How to Stop a systemd Service Restart Loop
Clear Windows Update Cache Windows 10 Guide
Windows Search Access Denied Error Fix
How to Fix Windows Security Service Unavailable Error
Troubleshoot Chrome Extension Permission Denied
Troubleshoot Windows Security Launch Failure
Windows Security High RAM Fix
Group Policy Preventing BitLocker Auto-Unlock? Here's Help
Fixing NGINX 502 Bad Gateway Permission Denied
Chrome Profile Error on Windows 10: Fix Guide
Chrome Broken After Update? Here's How to Fix It
How to Stop a systemd Service Restart Loop
Clear Windows Update Cache Windows 10 Guide