Yes, I am using Unattended Access".. both Thinkorswim and Trader workstation are java based applications so not sure why Thinkorswim is causing this issue.. thanks for looking into it..
If I disconnect and reconnect I can open other apps and work.. but if I click on the TOS windows it "locks up' again. So I just restart from CMD prompt and reconnect and continue without issues.. just TOS causing issues..

I think are you on to something.. at home I remoted from one PC to another and brought up UAC, which was set to never notify, and the screen hung. Next I cleared that and remoted again and brought up Task manager and it again hung. Same with trying to install or uninstall pgms. For now I'll just avoid doing these things. Strange thing is I was able to bring up a CMD window and do a shutdown restart thinking that would clear it up but it said "Screen Sharing is paused by remote computer" Thanks for the follow up and if you have other things to try let me know

Yes I am using Unattended but pretty sure UAC is OFF... but I'll check again.. thanks for the response.

I am new to Cloudberry Remote Assistant and I have having similar issues. Sometimes the apps running on the remote PC do not respond to mouse clicks.. Not all the apps just some.. I can't end the app using Task manager as it doesn't respond to mouse clicks. Can't end process using services and I can't scroll down the window. Also can't install an application remotely as it has the same effect, just hangs and can't press next or cancel... Anyone else seen this and able to correct it?