I cannot shut down a friend's iMac after solving issues or making updates or changes for her. It requires that I first have to "force quit" TeamiVewer before it will shut down. Of course that breaks the remote connection with the iMac so it is impossible for me to shut it down. I don't recall the version number of TeamView on it, but I did just update it.
I NEVER have any problems dealing with remote PCs running Windows 10. What's wrong??