Fix Nginx 502 Bad Gateway: Upstream Connection Refused
If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows 11 Update Stuck at 0% with Service Not Running
You click Check for updates, see 0% for ages, and maybe an error like 'Windows Update service...
Fix ERR_NAME_NOT_RESOLVED in Chrome: Network Troubleshooting Guide
When Chrome displays ERR_NAME_NOT_RESOLVED, it means the browser cannot translat...
Docker Container Exits Immediately After Start: Network Fixes
You start a Docker container and it exits right away. The container logs show no errors, or the e...
How to Fix Git Merge Conflicts When Pulling from Remote
When you run git pull and see a merge conflict, it means your local changes and the ...
Fix Windows Cannot Access Shared Folder with Password Protected Sharing
You try to access a shared folder from another computer on your network and get an error: "Wi...
Issue queue
SitemapTroubleshooting VS Code Git Change Detection
How to Fix Cloudflare 526 and 525 Errors on Origin
Git index.lock File Exists: Causes and Solutions
Resolve Cloudflare 521 via SSL Settings
Resolve ERR_CONNECTION_RESET by Resetting Proxy Settings
Git Detached HEAD: How to Checkout a Branch Safely
Fix Chrome High RAM Usage from Hardware Acceleration
What Git Merge Conflict Markers Mean and How to Fix Them
How to Resolve Chrome Access Violation on Windows 7
DNS Configuration Tips for ERR_NAME_NOT_RESOLVED
Fix Docker Build Context Canceled in VS Code
Docker Volume Permission Denied as Root Fix
How to Fix Cloudflare 526 and 525 Errors on Origin
Git index.lock File Exists: Causes and Solutions
Resolve Cloudflare 521 via SSL Settings
Resolve ERR_CONNECTION_RESET by Resetting Proxy Settings
Git Detached HEAD: How to Checkout a Branch Safely
Fix Chrome High RAM Usage from Hardware Acceleration
What Git Merge Conflict Markers Mean and How to Fix Them
How to Resolve Chrome Access Violation on Windows 7
DNS Configuration Tips for ERR_NAME_NOT_RESOLVED
Fix Docker Build Context Canceled in VS Code
Docker Volume Permission Denied as Root Fix