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

Fixing Nginx 502 Bad Gateway in Docker Networks

You have an Nginx container proxying requests to another container (like a PHP-FPM or Node app), ...

Fix git index.lock File Exists Error on Windows

If you see fatal: Unable to create 'index.lock': File exists. when running G...

Windows Security App Not Opening? Try These Steps

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

Chrome Sync Not Working on Windows 10: Quick Fixes

You open Chrome on your Windows 10 PC, expecting your bookmarks and passwords to be there, but no...

Fix Discord Black Screen from Chrome Hardware Acceleration

Why Chrome Hardware Acceleration Causes Discord Black Screen

When Chrome uses hardware a...

Fix Windows Security App Missing from Start Menu

You open the Start menu, type “Windows Security,” but nothing appears. The app may have been unre...