I am having the exact same problem. I recently moved and had to bring my laptop from work (Windows 7 Pro SP1) home to work remotely. I have two laptops at home (Both Windows 10) and each is on their own monitor (Primary Laptop uses HDMI, Secondary uses RGB). I use input director from my primary laptop to control the mouse/kb of my 2nd laptop.
Before I moved and had my laptop at work, I used TV from each of my laptops to connect to each of the monitors at work. This worked great for the last 2 years or so.
Now though, I have my work laptop at home. I use the display port of my work laptop to connect to my primary monitor, and the HDMI port to hook it to my secondary monitor.
I then switch the monitors back to use my personal laptops, and then use TV on each laptop to connect to the work laptop and its two displays. Display and functionality wise, this setup works fine...I can see and control everything just like I want it, but when I try to launch W.E., Control Panel, etc etc, I get the server execution failure option. I have isolated this to only be an issue when TV is connected. As soon as I disconnect and go back to the laptop manually, everything works fine.
If I disconnect both monitors from the work laptop, and use TV from my personal laptop, the problem still persists.
I think that the switch to bringing the laptop home with me is coincidental. The day I went to work to get my laptop, I wasn't able to open W.E. via TV, but it worked fine once I got to the office.
For now I think I am just going to have to install input director on my work laptop, and manually switch the inputs on my monitors, but I would really like the convenience of TV so I can just click where I want to go. Hopefully someone can help with this!!!