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

Fix Ubuntu Font Rendering in Windows Terminal

If you use Windows Terminal with Ubuntu via WSL, you may notice fonts look blurry, too small, or ...

How to Fix Nginx 502 Bad Gateway: A Practical Guide

Seeing a 502 Bad Gateway error from Nginx usually means the upstream server (like PHP-FPM, Gunico...

Jupyter Kernel Not Starting: Quick Fixes

You open a notebook, try to run a cell, and the kernel dies or never connects. This is a common J...

How to Fix BitLocker SSL Certificate Error

Symptoms

When you try to unlock a BitLocker-protected drive or enable BitLocker, you may ...

How to Set Up Windows Defender for Low Memory Usage

If your system feels sluggish or you see high memory usage from Antimalware Service Executable (M...

Firefox Not Responding? Try Safe Mode Troubleshooting Steps

If Firefox stops responding—freezing, crashing, or refusing to load pages—it's often due to a con...