Knowledge base for software setup, errors, and daily tool work.

Chrome Sync Not Working on School Chromebook: Fixes

If your Chrome browser isn't syncing bookmarks, passwords, or history on a school Chromebook,...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Fix Windows Security App Not Starting on Windows 11

You click the Windows Security icon or try to open it from Settings, but nothing happens. The app...

Fix Chrome Crashing on Startup in Windows 10

If Chrome crashes immediately or shortly after launching on Windows 10, the cause is often a corr...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Windows Security App Not Opening? Try These Steps

If the Windows Security app won't open, shows a blank screen, or crashes immediately, you'...