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 notesChrome Certificate Error: Not Secure Site Workaround
You're trying to reach a site and Chrome shows a full-page warning: “Your connection is not p...
Docker Compose Env Variable Not Available in Container: Fix
You define an environment variable in your docker-compose.yml file, but when you run...
Chrome Sync Not Working After Password Change: Fixes
Changing your Google password can break Chrome sync on all devices. Here's how to get it work...
Fix 'docker network not found' After Prune
If you run docker network prune and later see errors like network not found
Reset Network Settings in Windows 11 When You Have No Internet
If you're reading this, you probably can't get online in Windows 11. The network icon in ...
Issue queue
SitemapCherry-Pick Conflicts: Causes and Fixes
VS Code Windows Terminal Python PATH Error Fix
Fix Git SSL Certificate Problem Unable to Get Local Issuer on Ubuntu
Pass Variables from Docker Compose to Dockerfile
Troubleshooting Chrome Extensions That Fail to Load
How to Fix node-sass Build Errors on Linux
How to Resolve Cloudflare Wildcard Permissions Denied
Fix 'docker network not found' Error on Mac
How to Fix Chrome ERR_CONNECTION_RESET When VPN Is On
How to Fix Unverified Breakpoints in VSCode
Resolve Windows 11 Update Stuck on 0 Percent
Fix Windows Update Service Stopped Error
VS Code Windows Terminal Python PATH Error Fix
Fix Git SSL Certificate Problem Unable to Get Local Issuer on Ubuntu
Pass Variables from Docker Compose to Dockerfile
Troubleshooting Chrome Extensions That Fail to Load
How to Fix node-sass Build Errors on Linux
How to Resolve Cloudflare Wildcard Permissions Denied
Fix 'docker network not found' Error on Mac
How to Fix Chrome ERR_CONNECTION_RESET When VPN Is On
How to Fix Unverified Breakpoints in VSCode
Resolve Windows 11 Update Stuck on 0 Percent
Fix Windows Update Service Stopped Error