Fix Nginx 502 Bad Gateway with Docker and PHP-FPM
You have a Docker setup with Nginx proxying to a PHP-FPM container, and you're getting a 502 ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Windows 11 Taskbar Icons Missing After Update
After a Windows 11 update, some users find that taskbar icons—like the Start button, search, or p...
How to Troubleshoot Remote Desktop Connection Issues
Remote Desktop (RDP) lets you control another computer over a network. When it fails, you usually...
Fix git index.lock File Exists Error on Windows
If you see fatal: Unable to create 'index.lock': File exists. when running G...
Windows Defender Real-Time Protection Greyed Out: How to Fix
If you open Windows Security and see the real-time protection toggle greyed out, you can't tu...
Docker Compose Environment Variable from Shell Not Working: Fixes
You set an environment variable in your shell, but Docker Compose ignores it. This is a common pi...
Topic paths
Quick titles
Windows Defender Real-Time Protection Service Not Running FixHow to Restore Lost Git CommitsResolve Git Detached HEAD in SourceTreeTaskbar Visible But No Icons – SolutionsDocker Background Container Keeps Exiting: Fix GuideTroubleshooting npm run build: Common Problems and FixesGit Merge Unrelated Histories: Step-by-Step GuideWindows 11 Installation Assistant Stuck at 99% After Restart