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 listHow to Fix Git Authentication Failed in VS Code
You're in VS Code, push or pull fails with "Authentication failed"—this is common and...
Rebuild Windows Search Index Without Losing Data
If Windows Search stops returning results or behaves slowly, rebuilding the index often fixes it....
Cloudflare DNS Not Propagating After SSL Certificate Change
You changed an SSL certificate in Cloudflare, but DNS changes aren't showing up. This is a co...
How to Fix Nginx Redirect Loop That Prevents Site Loading
You open your site, and the browser keeps loading until it times out or shows a redirect error. T...
How to Fix Chrome ERR_CONNECTION_RESET with DNS Flush
If Chrome shows ERR_CONNECTION_RESET, the connection was interrupted. This often...
Topic paths
Quick titles
How to Fix npm Build Permission Error in LinuxResolving Python Dependency Conflicts with PipenvVSCode Git Authentication Error: Token ExpiredHow to Fix DNS Probe Finished NXDOMAIN with Google DNSNginx Cannot Read File: Permission FixPython IntelliSense Broken in VS Code? Try These FixesHow to Fix Error 0x80070005 in Windows UpdateCloudflare DNS Propagation Time: What to Expect and How to Check