How to stop active machine?

Hi all, I want to stop the active machine but I don’t know how to do that. Please help me. Thank you.

You can click the stop button from the machines page on the left side.

I’m sorry forgot to clarify, the machine is on Starting Point tab. I’m still beginner and don’t know how to hack the machine without walkthrough.

Are you still experiencing difficulty in terminating the active machine ?

Did you connect to the OVPN ?