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 notesHow to Fix Git Merge Conflict Error Code 128
When you run git merge and get error: merge conflict followed by ...
How to Fix Docker Container Exits Immediately with Permission Denied
You start a Docker container, but it exits immediately. Running docker logs shows a ...
Fix Edge Sync Stuck on Sign-In Loop
You open Microsoft Edge, try to sign in to sync your data, and it keeps looping back to the sign-...
How to Fix Windows Explorer Keeps Restarting
If Windows Explorer (the desktop, taskbar, and file manager) keeps restarting, you'll see the...
Windows 11 WiFi Has Internet but Other Devices Work Fine
You're connected to WiFi on your Windows 11 PC, but the network icon shows 'No internet&#...
Issue queue
SitemapFix ERR_NAME_NOT_RESOLVED DNS Configuration Error
How to solve nginx config test failure unexpected end of file
Defender Real-Time Protection Not Working Fix
How to Resolve Git Authentication Failed in VS Code for GitLab
Fix Windows Update Error 0x80070002: Repair Steps
Resolving pnpm ENOENT Error in Node.js Projects
Docker Postgres Volume Permission Denied Fix
Stop npm Permission Errors: Change Install Path
Troubleshooting Nginx 502 Errors for Docker Apps
Nginx Cloudflare Origin Certificate Installation Guide
How to Resolve Windows 11 Update Stuck at Zero Percent
Windows 11 WiFi Connected No Internet: IPConfig Release Renew
How to solve nginx config test failure unexpected end of file
Defender Real-Time Protection Not Working Fix
How to Resolve Git Authentication Failed in VS Code for GitLab
Fix Windows Update Error 0x80070002: Repair Steps
Resolving pnpm ENOENT Error in Node.js Projects
Docker Postgres Volume Permission Denied Fix
Stop npm Permission Errors: Change Install Path
Troubleshooting Nginx 502 Errors for Docker Apps
Nginx Cloudflare Origin Certificate Installation Guide
How to Resolve Windows 11 Update Stuck at Zero Percent
Windows 11 WiFi Connected No Internet: IPConfig Release Renew