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

How to Enable Windows Defender via Command Prompt

If Windows Defender is disabled on your system—often due to group policy, third-party antivirus, ...

Fix Docker Desktop WSL Integration After Update

After a Docker Desktop update, you might see that your WSL 2 distributions no longer appear in th...

Fix Microsoft Store Error 0x80073cf3

When you try to install or update an app from the Microsoft Store, you might see error 0x80073cf3...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

How to Free Up a Port in Command Prompt (Windows)

When an application fails to start because a port is already in use, you need to free that port. ...

OBS Black Screen Troubleshooting Checklist

You launch OBS Studio, start a scene, and the preview shows a black screen. This is one of the mo...