Fix Nginx 502 Bad Gateway on Docker Ubuntu
You're running Nginx as a reverse proxy inside Docker on Ubuntu, and suddenly you see
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesWindows 11 Update Stuck at 0%: How to Fix
You click 'Check for updates' and see the download stuck at 0% for minutes or hours. This...
Fix VS Code Git Auth Failed with Personal Access Token
If you're using a personal access token (PAT) for Git authentication in VS Code and seeing &#...
Nginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...
How to Fix VS Code Terminal Not Opening
If you click the terminal panel in VS Code and nothing appears, or it opens but stays blank, the ...
Fix Cloudflare Wildcard Subdomain SSL Not Working
You set up a wildcard SSL certificate for your domain on Cloudflare, but some subdomains still sh...
Issue queue
SitemapTroubleshooting Docker Nginx 502 Bad Gateway
Python Dependency Conflict: How to Identify and Fix
ERR_CONNECTION_RESET in Chrome Troubleshooting
Docker Compose Environment Variable Override Not Working: Fixes & Checks
Git Merge Unrelated Histories: Step-by-Step Guide
Resolve Docker Context Canceled in Git Bash on Windows
Fix Windows Update Error 0x80070002 After Update
Setting Up Git LFS for Large Files
Fixing Cloudflare 521 Error: Enable Origin Pull Setup
Fix Git Large File Push Permission Denied
Fix Windows 11 Installation Assistant Stuck at 99% in Safe Mode
Docker Disk Full on Mac: Quick Fixes
Python Dependency Conflict: How to Identify and Fix
ERR_CONNECTION_RESET in Chrome Troubleshooting
Docker Compose Environment Variable Override Not Working: Fixes & Checks
Git Merge Unrelated Histories: Step-by-Step Guide
Resolve Docker Context Canceled in Git Bash on Windows
Fix Windows Update Error 0x80070002 After Update
Setting Up Git LFS for Large Files
Fixing Cloudflare 521 Error: Enable Origin Pull Setup
Fix Git Large File Push Permission Denied
Fix Windows 11 Installation Assistant Stuck at 99% in Safe Mode
Docker Disk Full on Mac: Quick Fixes