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

Fix 'Windows Security Module Not Found' Antivirus Error

If you see a message like "Windows Security module not found" inside your third-party antivirus p...

Fix Windows 10 Activation Access Denied Permission Issue

You try to activate Windows 10 but see 'Access Denied' or 'Permission Denied.' This usually means...

How to Fix Command Prompt Crashing on Open

You click Command Prompt, the window flashes for a split second, then disappears. This can happen...

Windows Defender and Ubuntu Dual Boot Setup Guide

If you run a dual-boot system with Windows and Ubuntu, you may notice that Windows Defender somet...

Windows Defender Troubleshooting Checklist for Common Errors

Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background. But w...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN