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

Fix net::ERR_CERT_AUTHORITY_INVALID on Chrome in Linux Terminal

When you see net::ERR_CERT_AUTHORITY_INVALID in Chrome on Linux, it usually means th...

Fix Chrome High Memory Usage on Windows 10

If Chrome is slowing down your Windows 10 PC, high memory usage is often the culprit. You might n...

Docker Compose Environment Variable Not Updating? Fix It

Fix Windows Update Service Not Running with Malwarebytes

If Windows Update fails with error messages like "Service not running" or "Windows Up...

Fix npm run build Failed with PostCSS Error

You run npm run build and see a PostCSS error. This often happens after updating pac...

How to Fix Nginx 'Upstream Connection Refused' Error

When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...