Fixing Nginx Upstream Connection Refused and Permission Denied
If you see connect() failed (111: Connection refused) or connect() failed (13:...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix 'pip install externally managed environment' Error
If you're seeing pip install fail with a message about an externally managed env...
How to Fix Git Authentication Failed in VS Code
You're in VS Code, push or pull fails with "Authentication failed"—this is common and...
How to Fix Cloudflare SSL Full Strict Error
If you see a Cloudflare SSL error when using Full (Strict) mode, your origin server is not presen...
Fix Windows 11 WiFi No Internet Due to Antivirus Blocking
If your Windows 11 PC shows full WiFi bars but no internet access, your antivirus might be blocki...
Fix 'Permission Denied' When Running pip install --user
If you see Permission denied when running pip install --user somepackage
Issue queue
SitemapResolving Git's Unrelated Histories Error
How to Reduce Chrome Memory After Update
How to Resolve Windows Update Error 0x80070002
VSCode Git SSH Key Error Troubleshooting
Docker Nginx 502 Bad Gateway After Restart Fix
How to Resolve Cloudflare 521 on Reboot
npm run build Fails: Missing Environment Variables Fix
How to Stop Chrome Black Screen on Laptop
VPN DNS Probe NXDOMAIN Error Fix
Chrome Sync Broken on Mac: Step-by-Step Fix
Python MemoryError Large File Solutions
Breaking the Blue Screen Cycle After Windows 11 Update
How to Reduce Chrome Memory After Update
How to Resolve Windows Update Error 0x80070002
VSCode Git SSH Key Error Troubleshooting
Docker Nginx 502 Bad Gateway After Restart Fix
How to Resolve Cloudflare 521 on Reboot
npm run build Fails: Missing Environment Variables Fix
How to Stop Chrome Black Screen on Laptop
VPN DNS Probe NXDOMAIN Error Fix
Chrome Sync Broken on Mac: Step-by-Step Fix
Python MemoryError Large File Solutions
Breaking the Blue Screen Cycle After Windows 11 Update