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 notesFixing 'Command Not Found' in VS Code Terminal
You open the integrated terminal in VS Code, type a command you know is installed, and get ...
How to Fix Firefox Secure Connection Failed Malware Warnings
If you see a "Secure Connection Failed" error in Firefox and suspect malware, it's of...
Node.js Heap Out of Memory Troubleshooting Checklist
When a Node.js process crashes with FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - Ja...
Fix Docker Build Context Canceled Error in Docker Desktop
When building Docker images in Docker Desktop, you might see an error like context canceled...
How to Reset Windows Security App Settings
If the Windows Security app isn't opening, showing errors, or behaving oddly, resetting its s...
Issue queue
SitemapWindows Defender Stuck on Turning Off Real-Time Protection Fix
Bluetooth Not Working After Windows 11 Update: Fix
Fix Angular Breakpoints Not Hit in VS Code
Windows Explorer Keeps Restarting – Fix Guide
How to Use nvm to Change Node Version per Project
Cloudflare DNS Stuck After New Domain Setup
Python UnicodeDecodeError: Quick Fixes for File Encoding Issues
Remove Problematic Windows 11 Update via Safe Mode
Resolve npm ENOENT Error on Mac – package.json Not Found
How to Fix Chrome Extensions That Won't Load
Troubleshooting Docker Swarm Network Errors
Troubleshooting Docker Network Missing Error
Bluetooth Not Working After Windows 11 Update: Fix
Fix Angular Breakpoints Not Hit in VS Code
Windows Explorer Keeps Restarting – Fix Guide
How to Use nvm to Change Node Version per Project
Cloudflare DNS Stuck After New Domain Setup
Python UnicodeDecodeError: Quick Fixes for File Encoding Issues
Remove Problematic Windows 11 Update via Safe Mode
Resolve npm ENOENT Error on Mac – package.json Not Found
How to Fix Chrome Extensions That Won't Load
Troubleshooting Docker Swarm Network Errors
Troubleshooting Docker Network Missing Error