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 notesDocker Build Context Canceled on WSL2: Causes and Fixes
If you're using Docker Desktop with WSL2 backend and your build context gets canceled mid-bui...
Fix Cloudflare Error 521 After a Server Update
If you see Cloudflare error 521 after updating your server, the origin web server is refusing the...
Fix 'pip externally managed environment' Error for venv Setup
When creating a Python virtual environment on newer Linux distributions (e.g., Debian 12, Ubuntu ...
Cloudflare DNS Propagation Not Working with New Domain: Fixes
You registered a new domain, set it up with Cloudflare, but after hours (or days) the site still ...
Fix Windows 11 Blue Screen After Update Using SFC /Scannow
After a Windows 11 update, you might see a blue screen error on boot or during use. One common fi...
Issue queue
SitemapResolving Nginx Permission Denied Errors
Solving 'Fatal: Remote Origin Already Exists' in Git
Fixing VS Code Git Authentication Failed Error
Fix Node Sass Build Failure Due to Node Version Mismatch
Breakpoint Not Hit in VSCode? Check Source Maps
Fix 'Permission Denied' When Using pip in VS Code Terminal
Resolve Git LFS Push Errors Step by Step
Troubleshooting Cloudflare Wildcard SSL Issues
How to Fix Access Denied When Sharing Folders in Windows 10
How to Restore IntelliSense Suggestions in VS Code
How to Activate Sync in Microsoft Edge for Mac
VS Code Git Auth Failed: Quick Fixes
Solving 'Fatal: Remote Origin Already Exists' in Git
Fixing VS Code Git Authentication Failed Error
Fix Node Sass Build Failure Due to Node Version Mismatch
Breakpoint Not Hit in VSCode? Check Source Maps
Fix 'Permission Denied' When Using pip in VS Code Terminal
Resolve Git LFS Push Errors Step by Step
Troubleshooting Cloudflare Wildcard SSL Issues
How to Fix Access Denied When Sharing Folders in Windows 10
How to Restore IntelliSense Suggestions in VS Code
How to Activate Sync in Microsoft Edge for Mac
VS Code Git Auth Failed: Quick Fixes