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

WireGuard Handshake Not Completing: Firewall Fixes

You set up WireGuard, but the handshake never completes. Both peers show no handshake time, and y...

Configuring Windows Defender for Ubuntu Dual-Boot Systems

If you dual-boot Windows and Ubuntu, Windows Defender may flag Linux partitions, boot files, or t...

How to Fix Windows Update Stuck on Blank Screen

You restart your PC to install updates, but instead of the usual progress screen, you get a blank...

Certbot Renewal Failed Due to Nginx Configuration: How to Fix

How to Reset Windows Defender Permissions

When Windows Defender stops working or shows permission errors, it's often due to corrupted setti...

Fix High CPU Usage by Antivirus Scanning PowerShell

If you notice that PowerShell (powershell.exe or pwsh.exe) is using high CPU, and you have an ant...