How to Fix Windows Update 502 Bad Gateway in Windows 10
If you see a "502 Bad Gateway" error when checking for Windows updates on Windows 10, it usually ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Update Troubleshooting Checklist
Windows Update can fail for many reasons. This checklist walks you through the most common fixes,...
Fix Windows Defender Not Opening Error 404
You try to open Windows Defender and get an error 404 – the page or resource can't be found. This...
Fix PostgreSQL Password Authentication Failed in pg_hba.conf
When you see psql: FATAL: password authentication failed for user "username", it usu...
How to Fix Chrome ERR_TUNNEL_CONNECTION_FAILED
You're browsing in Chrome, and suddenly a page fails to load with the error ERR_TUNNEL_CO...
Fix Windows Update Error 0x8024402c Permission Denied
You see error 0x8024402c when checking for updates, often accompanied by “Permission denied.” Thi...
Topic paths
Quick titles
Resolve Windows Update Version MismatchTroubleshoot Nginx Permission Denied on LogsWindows 10 Defender DNS Error: Causes and FixesApache Won't Start: Missing Module FixesMongoDB Error 18: Authentication Failed SolutionsRedis Server Won't Start on Ubuntu – Fix GuideManaging Multiple Kubernetes Clusters with kubectl ContextsComposer Memory Limit Fix: Practical Steps