Fix Docker Nginx 502 Bad Gateway Upstream Error
When running Nginx as a reverse proxy in Docker, a 502 Bad Gateway error with 'upstream' ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listDocker Container Exits Immediately: 'Command Not Found' Fix
You start a Docker container and it exits immediately with a message like /bin/sh: 1: somec...
How to Fix 'Remote Desktop Credentials Did Not Work'
When you try to connect to a remote PC via Remote Desktop and see 'Your credentials did not w...
Fix Nginx Upstream Connection Refused in Docker
You have Nginx running, either on the host or in a container, proxying to another Docker containe...
How to Enable Windows Defender Real-Time Protection via Command Line
If you need to turn on Windows Defender real-time protection but can't access the Settings ap...
How to Fix the Git index.lock File Exists Error
You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...
Topic paths
Quick titles
Fix Chrome Extensions Not Working After UpdateChrome Black Screen on Intel Graphics? Fix ItWindows 11 Update Causes Blue Screen Loop: FixChrome Proxy Error ERR_CONNECTION_RESET GuideFix Detached HEAD in Git and Switch BranchesHow to Reduce Chrome Memory UsageFix Nginx 502 Bad Gateway with Docker Environment VariablesTroubleshooting VS Code Java Language Server Issues