You try to connect to a managed computer but receive an error - "Unable to gain access to the computer"
1. Check if the user which logged in to windows and launched ControlUp, is part of the administrators group on the managed computer
2. If you are using a non-admin user to launch ControlUp, you can go in the Console to settings -> AD Connections and set an administrator user which the Console will use when it tries to connect to your managed computers.
3. It might be a DNS registration issue, please verify the server DNS registration.