How to Fix Nginx Upstream Connection Refused on Port 80
When nginx logs show "upstream connection refused" while connecting to port 80, it means ...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix DNS Probe Finished NXDOMAIN on Custom DNS Server
If you see “DNS PROBE FINISHED NXDOMAIN” in Chrome or another browser while using a custom DNS se...
How to Fix an Nginx Redirect Loop: Step-by-Step
You load a site and the browser keeps spinning—eventually showing 'redirect loop' or '...
Windows 11 Installation Assistant Stuck at 99% Disk Space
You’re running the Windows 11 Installation Assistant, it gets to 99%, and then sits there. The pr...
Fix Chrome Status Access Violation Error on Windows 10
You're browsing in Chrome on Windows 10 and suddenly see an error page with: STATUS_ACC...
Fix VS Code IntelliSense Not Working in WSL
You open a project in VS Code connected to WSL (Windows Subsystem for Linux), and IntelliSense ju...
Issue queue
SitemapHow to Fix Nginx Invalid Parameter Error
Troubleshooting Python UnicodeDecodeError
Firefox Secure Connection Failed Fix with VPN
How to Fix Access Denied in Windows Security
Windows 11 Update Stuck? How to Download Manually
Windows Explorer Keeps Restarting After Login – Troubleshooting Guide
Fix pip Externally Managed Environment Error
Fix npm run build Failed on macOS: Common Causes and Solutions
Fix Git 'fatal: refusing to merge unrelated histories' on GitHub
Troubleshoot Missing IntelliSense in Remote SSH
How to Diagnose and Fix Chrome Memory Leaks
Cloudflare 521 Error WordPress Fix Guide
Troubleshooting Python UnicodeDecodeError
Firefox Secure Connection Failed Fix with VPN
How to Fix Access Denied in Windows Security
Windows 11 Update Stuck? How to Download Manually
Windows Explorer Keeps Restarting After Login – Troubleshooting Guide
Fix pip Externally Managed Environment Error
Fix npm run build Failed on macOS: Common Causes and Solutions
Fix Git 'fatal: refusing to merge unrelated histories' on GitHub
Troubleshoot Missing IntelliSense in Remote SSH
How to Diagnose and Fix Chrome Memory Leaks
Cloudflare 521 Error WordPress Fix Guide