Fixing NGINX Upstream Connection Refused SSL Errors
When NGINX logs upstream connection refused for an SSL backend, it usually means the...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Flush DNS on Windows 11 to Fix Internet Issues
If your internet seems slow, websites won't load, or you see DNS-related errors, a corrupted ...
Fix Wi-Fi Adapter Not Working in Windows 11: No Internet
You connect to Wi-Fi in Windows 11, but the icon shows a globe with “No internet.” The adapter mi...
How to Merge a Git Detached HEAD Back to Master
If you see a message like 'You are in 'detached HEAD' state' after checking out a...
Fix 'port already allocated' Error in Docker Compose
You run docker compose up and see port is already allocated. This means...
Windows Security App Not Opening: Practical Fixes
If the Windows Security app won't open—clicking the icon does nothing, or it crashes immediat...
Issue queue
SitemapFix Firefox Secure Connection Failed Error
How to Rebuild Windows Search Index Safely
Troubleshooting Docker Compose Port Allocation
How to Show Git Changes in VS Code Source Control
Windows Update 0x800f081f Troubleshooting Guide
How to Fix Git Authentication Failure in VS Code
Resolve Self-Signed Certificate Error in Cloudflare Full Strict
Fix 'git remote origin already exists' on GitHub
How to Re-Enable Windows Defender After Malware Attack
Fix VSCode Breakpoints Not Hitting
VS Code Debugger Not Hitting Breakpoints in Node.js: Fixes
Python Dependency Conflict Checklist: Diagnose & Fix
How to Rebuild Windows Search Index Safely
Troubleshooting Docker Compose Port Allocation
How to Show Git Changes in VS Code Source Control
Windows Update 0x800f081f Troubleshooting Guide
How to Fix Git Authentication Failure in VS Code
Resolve Self-Signed Certificate Error in Cloudflare Full Strict
Fix 'git remote origin already exists' on GitHub
How to Re-Enable Windows Defender After Malware Attack
Fix VSCode Breakpoints Not Hitting
VS Code Debugger Not Hitting Breakpoints in Node.js: Fixes
Python Dependency Conflict Checklist: Diagnose & Fix