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 Container Exits Immediately: Fix with Restart Policy
You start a Docker container, it runs for a second, then stops. No error messages, just a quick e...
Fix Chrome Access Violation Error When Opening PDFs
You click a PDF link in Chrome and instead of the document, you see an error: Access Violatio...
How 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 VSCode IntelliSense Not Working with TypeScript
You open a TypeScript file in VSCode, start typing, and get no autocomplete, no hover info, no er...
Chrome Startup Crash Due to Malware: Detection and Fix
If Chrome crashes immediately upon launch, or opens to a blank page before closing, malware may b...
Topic paths
Quick titles
How to Fix Docker Build Context Canceled ErrorDocker Pull Access Denied: Missing Credentials FixGit Error: Index Lock File Exists – How to FixFix Windows Update Error 0x80070005Nginx Upstream Connection Refused Fix GuideVS Code Save Permission Denied on Mac: How to FixHow to Rebuild Windows Search Index SafelyHow to Fix UnicodeDecodeError in Python Requests