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

How to Run Command Prompt as Administrator

Many Windows commands require administrator privileges. If you try to run a command that needs el...

How to Fix Command Prompt High CPU Usage on Windows 10

Fix Windows Defender Not Working After Update

After a Windows update, you might find that Windows Defender (Microsoft Defender Antivirus) is di...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Error

When you see "ERR_TUNNEL_CONNECTION_FAILED" in Chrome, it usually means your browser can't establ...

Fix 'Access Denied' for Chrome Extensions

You try to install or enable a Chrome extension and see an 'Access denied' message. This can happ...

How to Clear PowerShell Console History and Cache

PowerShell retains console history and caches commands for convenience, but sometimes you need a ...