Checklists for software errors, setup, and tool workflows.

Nginx Upstream Connection Refused: Fixing localhost Errors

You set up an nginx reverse proxy to forward requests to a backend service on localhost, but ngin...

How 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...

Rebuild Windows Search Index Without Losing Data

If Windows Search stops returning results or behaves slowly, rebuilding the index often fixes it....

How to Fix Python UnicodeDecodeError: 'utf-8' Codec Can't Decode Byte

You're running a Python script and suddenly see:

UnicodeDecodeError: 'utf-8' ...

Fix ERR_CERT_AUTHORITY_INVALID in Chrome Incognito Mode

You open Chrome incognito and hit a warning: NET::ERR_CERT_AUTHORITY_INVALID. Th...

Git Push Rejected Non Fast Forward: Troubleshooting Checklist

If you see ! [rejected] main -> main (non-fast-forward) when running