When a Windows program asks for administrator rights, a UAC prompt appears. It runs on the "secure desktop", which ordinary applications cannot see. That is why some remote sessions suddenly turn black or look frozen.
Why does it happen?
A remote desktop program running with normal user rights cannot reach the secure desktop. The session may wait until someone approves the prompt locally.
The fix: install as a service
Installing the program as a Windows service lets you see and handle administrator prompts remotely. You can also connect after a restart, before anyone signs in.
Security tips
- Choose a long, unique permanent password.
- Share it only with people you trust.
- Turn the service off on computers you no longer use.
- Keep the program up to date.
Just tick the service option during setup. For a walkthrough see the connection guide.