Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Reset Chrome Sync: Step-by-Step Guide
Chrome sync keeps your bookmarks, passwords, history, and settings consistent across devices. But...
Fix Error 0x80070002 in Windows Update Registry
Error 0x80070002 during Windows Update typically means the system cannot find a required file. Th...
Fix Chrome Certificate Error: Invalid Authority SSL Certificate
If Chrome shows 'Your connection is not private' with 'NET::ERR_CERT_AUTHORITY_INVALI...
Fix Firefox Secure Connection Failed Not Loading
If Firefox shows a “Secure Connection Failed” error and won’t let you load a site, it usually mea...
Fix 'Git Remote Origin Already Exists' When Updating Remote URL
You run a command like git remote add origin https://newurl.com/repo.git and get
Issue queue
SitemapFix VS Code GitHub Authentication Failed Error
Fix Windows 11 Installation Assistant Stuck at 99%
How to Fix Docker Compose Environment Variable Override Issues
Git Large File Push Timeout Troubleshooting
How to Fix npm ENOENT Errors During npm install
Troubleshooting node-sass Build Failure in npm
Git Authentication Failed in VSCode: Quick Fix
Docker No Space Left on Device Error: Fix Guide
Fix Python UnicodeDecodeError for sys.stdin Input
Fix PowerShell Permission Denied in VS Code
Resolve Docker Compose Nginx Port Conflict
Nginx 502 Bad Gateway Docker Container Fix
Fix Windows 11 Installation Assistant Stuck at 99%
How to Fix Docker Compose Environment Variable Override Issues
Git Large File Push Timeout Troubleshooting
How to Fix npm ENOENT Errors During npm install
Troubleshooting node-sass Build Failure in npm
Git Authentication Failed in VSCode: Quick Fix
Docker No Space Left on Device Error: Fix Guide
Fix Python UnicodeDecodeError for sys.stdin Input
Fix PowerShell Permission Denied in VS Code
Resolve Docker Compose Nginx Port Conflict
Nginx 502 Bad Gateway Docker Container Fix