Per example, you want to prevent a user from uploading exe files, without disabling the remote clipboard functionality.

This functionality is not directly present within TSplus.



However, we recommend applying this solution: Allow only specified file upload extensions or file sizes



Therefore we suggest you to set up Windows security policies that can do exactly what is requested and even more: 
https://www.bleepingcomputer.com/tutorials/create-an-application-whitelist-policy-in-windows/

We recommended to use a list of allowed programs instead, as this is easier to maintain.