We are trying out the latest version of remote utilites, and notice that when remoting Win10-users, the users PC is getting locked immediately when connecting to the host. If the user unlocks his screen with ctrl alt del, and i reconnect, the pc locks itself again.
This is very unusual. The only program setting remotely related to what you describe is "Lock workstation on disconnect" property (connection properties -> additional properties).
But since you say that locking happens on connect rather than on disconnect, and that it is really Remote Utilities' own Full Control mode rather than the RDP, we don't really know what might the reason. This is the first time we are reported such behavior.
One possible explanation could be that there is security software on your computer that prevents remote connection and/or input emulation typical for remote control software.
We have a PC that when we connect the host is on the lock screen so we enter the credentials to unlock and are shown the user's desktop. Within a few seconds we are kicked back to the lock screen.
This is only happening on one PC. There are 3 others we have tried it with and they operate normally. All of the hosts are running Windows 10 and have the same set of software running. And we've tried the viewer on 2 different PCs (one Win7 and the other Win8) and both get kicked back to the lock screen so that indicates the issue is with the host PC.
About the only thing I can think of that is different with this PC is that the user has poor eyesight so it is set for a lower resolution and is using high contrast theme.
UPDATE: Apparently this is not an issue specific to remote utilities. It's affecting other remote control software platforms. I found a few suggestions but nothing concrete. I will try there with my client and let y'all know what I find.