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

Command Prompt Login Loop Troubleshooting Checklist

You sign in to Windows but instead of the desktop, you get a command prompt window. Closing it lo...

Fix Windows Update Token Expired Error with Clean Boot

You might see a “Windows Update token expired” error when checking for updates, often after a lon...

Fix Remote Desktop 502 Bad Gateway in Nginx

If you're seeing a 502 Bad Gateway error when trying to access Remote Desktop through an Nginx re...

Fix Windows Update Authentication Failed / Permission Denied

When Windows Update fails with an "authentication failed" or "permission denied" message, it usua...

Fix Slow PowerShell on Windows 10: Practical Checks

If PowerShell takes several seconds to start or feels sluggish during execution, the problem ofte...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...