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

Nginx 502 Bad Gateway: PHP-FPM Fix Guide

Seeing a 502 Bad Gateway error from Nginx usually means it can't reach PHP-FPM. This is common af...

Jupyter Kernel Dead: Common Causes and Fixes

You're working in a Jupyter notebook, and suddenly the kernel dies. The notebook becomes unrespon...

Windows Update Cannot Connect (Permission Denied) Fix

If Windows Update fails with a “cannot connect” or “permission denied” error, it usually means th...

How to Break the Microsoft Store Login Loop

You open the Microsoft Store, try to sign in, and it keeps asking for your credentials again and ...

How to Restore Chrome Profile After a Crash

Symptoms of a Corrupted Chrome Profile

After a browser crash, you might see errors like '...

Microsoft Store 504 Error: Beginner's Troubleshooting Checklist

You open the Microsoft Store and instead of apps, you see a 504 error. This usually means the sto...