Fixing Nginx Upstream Connection Refused on Port 443
You see "upstream connection refused" in your Nginx error log when proxying requests to p...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix 'Windows Cannot Access Shared Folder' After Update
After a recent Windows update, you might see the error “Windows cannot access \\computername\shar...
How to Fix Python Dependency Conflicts in a Virtual Environment
You activate your virtual environment, run pip install, and get an error about conflicting depend...
Nginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...
Fix Permission Denied Error When Using pip Install on Mac
When you run pip install on macOS and see a 'permission denied' error, it us...
Fix Git SSL Certificate Problem: Unable to Get Local Issuer
When you run git clone or git pull and see an error like "S...
Issue queue
SitemapWindows Update Service Disabled by Group Policy Fix
Chrome Extensions Not Loading? Fixes That Actually Work
How to Fix Chrome Sync Not Working with Multiple Profiles
How to Fix Port Conflict in Docker Compose on macOS
How to Resolve Nginx Redirect Loop HTTP to HTTPS
Fix Python UnicodeDecodeError with errors='ignore'
Using nvm to Switch Node Version for a Specific Package
How to Remove Git index.lock File on Linux
How to Fix Cloudflare 522 Error: Origin Server Timeout
Fix npm ENOENT package.json Not Found Due to Wrong Directory
Fix Git 'index.lock' File Exists Error on Linux
How to Restore Search Indexing After Windows 10 Update
Chrome Extensions Not Loading? Fixes That Actually Work
How to Fix Chrome Sync Not Working with Multiple Profiles
How to Fix Port Conflict in Docker Compose on macOS
How to Resolve Nginx Redirect Loop HTTP to HTTPS
Fix Python UnicodeDecodeError with errors='ignore'
Using nvm to Switch Node Version for a Specific Package
How to Remove Git index.lock File on Linux
How to Fix Cloudflare 522 Error: Origin Server Timeout
Fix npm ENOENT package.json Not Found Due to Wrong Directory
Fix Git 'index.lock' File Exists Error on Linux
How to Restore Search Indexing After Windows 10 Update