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 notesHow to Generate a Cloudflare Origin Certificate
If you're using Cloudflare as a reverse proxy, you may want to encrypt traffic between your s...
Fix Chrome Status Access Violation in Safe Mode
If you see a 'status access violation' error in Chrome while in safe mode, it usually poi...
Docker Compose Environment Variable Not Set in Dockerfile
You set an environment variable in your docker-compose.yml file, but when you try to...
How to Fix Windows Update Service Not Running After Update
After a Windows update, you might find that the Windows Update service itself stops working. This...
Git Merge Conflict: How to See the Diff Between Versions
When you run git merge and hit a conflict, Git pauses and marks the conflicting file...
Issue queue
SitemapHow to Fix Nginx 502 Bad Gateway in Docker
Slow IntelliSense in VSCode – Troubleshooting Guide
Resolve Git Fast-Forward Merge Error
Python Requests Timeout: Per-Request Configuration
How to Fix Git 'index.lock' Error
Docker Desktop Engine Stopped: Log Location & Troubleshooting
Fix Git Refusing to Merge Unrelated Histories
VSCode TypeScript Breakpoints Not Working
Resolve pnpm Permission Denied in macOS Terminal
Fix Nginx Permission Denied on Configuration File
Fix VS Code Source Control Not Detecting Changes with Permission Denied
Ubuntu Docker Disk Space Full Error Fix
Slow IntelliSense in VSCode – Troubleshooting Guide
Resolve Git Fast-Forward Merge Error
Python Requests Timeout: Per-Request Configuration
How to Fix Git 'index.lock' Error
Docker Desktop Engine Stopped: Log Location & Troubleshooting
Fix Git Refusing to Merge Unrelated Histories
VSCode TypeScript Breakpoints Not Working
Resolve pnpm Permission Denied in macOS Terminal
Fix Nginx Permission Denied on Configuration File
Fix VS Code Source Control Not Detecting Changes with Permission Denied
Ubuntu Docker Disk Space Full Error Fix