Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listDocker Compose Environment Variable Not Updating? Fix It
You update a variable in your docker-compose.yml or .env file, run
How to Check Docker Disk Space Usage
If you run Docker for a while, you may notice your disk space shrinking. Images, containers, volu...
Fix ERR_NAME_NOT_RESOLVED Caused by Antivirus Block
If you see ERR_NAME_NOT_RESOLVED in Chrome, it usually means the browser can'...
Fix Docker Desktop Engine Stopped with Virtual Machine Error
You start Docker Desktop and see “Docker Desktop engine stopped” with a message about a virtual m...
How to Fix Windows Update Error 0x80070002 with a Clean Boot
If you see error 0x80070002 when running Windows Update, it usually means a file or resource that...
Topic paths
Quick titles
How to Use Special Characters in Docker Compose .env FilesTroubleshooting Docker Network Missing When Running ContainerFix VS Code Git Changes Not Showing in Source Control PanelHow to Resolve Docker Authentication FailedResolve Windows Security App Permission ProblemsWhy Your VS Code Breakpoint Condition Isn't WorkingIntel Graphics Chrome Black Screen TroubleshootingTroubleshoot Docker Compose .env File Issues