Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You've set up OBS Studio, added your sources, and started the virtual camera—but when you open Go...

You open Task Manager and see a process like sppsvc.exe or Software Prot...

Fix Nginx 502 Bad Gateway Behind Cloudflare
If you're seeing a 502 Bad Gateway error on a site that uses both Nginx and Clou...

Fix VSCode Remote SSH Connection Timeout Error
When using VSCode's Remote SSH extension, a connection timeout error (often 'Could not establish ...

Fix 'ffmpeg not recognized' Error on Mac
When you try to run ffmpeg in Terminal on a Mac and see "ffmpeg: command not found" or "not recog...

Chrome 502 Bad Gateway Error: Practical Fixes
You're browsing and suddenly get a 502 Bad Gateway error in Chrome. The page won't load, and you'...