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

How to Fix Nginx 404 Not Found Error

Seeing a 404 Not Found error in Nginx often means the server is running but can't locate the requ...

Jupyter Kernel Dead: Common Causes and Fixes

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

PowerShell Connection Timeout Troubleshooting Guide

When you run a PowerShell command and it hangs or fails with a timeout error, it's usually due to...

Fix Windows Search 404 Not Found Error via Registry

If Windows Search returns a '404 Not Found' error when you try to open the search pane or run a q...

How to Fix Windows Security 502 Bad Gateway Error

When you open Windows Security and see a “502 Bad Gateway” error, it means the app can’t connect ...

Fixing 'kubectl apply forbidden' for ClusterRoleBinding