Rebooting the remote computer won't work. This message was designed to prevent the use of software for malicious purposes out-of-the-box. It's one thing when a potential hacker patches or otherwise unlawfully modifies the product to be able to silently connect to a victim, and it's an entirely different thing when they can do that with the stock version.
Still, reading your messages I can understand that we may reconsider at the least the position of this message on the screen. It may make sense to move it upwards a bit, halfway the screen along the right edge and make it a bit smaller and less intrusive, yet visible. Would that work for you?
It requires elevated permissions to install, so I think its counter productive and not going to accomplish their goal of preventing malicious installs. If you already have admin rights, the app can be installed manually or with other apps like autohotkey answering automatically. I
Some users may disable UAC at all and may click on a malicious link in an email message and voila - the Host is silently installed on the computer.
Anyway, we will give more thought to this issue now and see if we can come up with a better solution.