Software comparisons, alternatives, and tool decision notes.

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking

You try to load a website and see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, or simi...

Fix Docker 'No Space Left on Device' in Container

If you're seeing no space left on device errors inside a Docker container, the c...

VSCode Python Debugger Breakpoint Not Stopping: Fixes

You set a breakpoint in VSCode, start debugging, and execution passes right through it. The debug...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

Fix Windows Update Service Not Running with DISM Restore Health

You try to run DISM /Online /Cleanup-Image /RestoreHealth and get an error saying th...