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

How to Show Hidden Icons on Taskbar in Windows 10

You may notice that some app icons in the system tray (notification area) are hidden behind an up...

Setup Cloudflare Origin Certificate for Nginx

If you use Cloudflare as a reverse proxy, enabling HTTPS between Cloudflare and your Nginx server...

Fix VSCode Permission Denied on Save in Linux

You're editing a file in Visual Studio Code, press Ctrl+S, and see a red error: "Failed t...

Fix Nginx Configuration Test: Missing Semicolon Error

When running nginx -t to test your configuration, you might see an error like:

Fix Chrome Hardware Acceleration Black Screen on External Monitor

If you connect an external monitor to your laptop and Chrome shows a black screen on that display...

Fix Docker Pull Access Denied for Private Repository