I've just discovered a driver issue related to latest Unified Remote Server (downloadable yesterday, 08th Aug.). The Issue happens when UR-Server is installed using the input driver for windows. The driver gets installed successfully, but windows revokes to use it due to "Driver Signature Failure". That way, "Basic Input" and other driver related functions are not usable.
This seems to happen only on the new Windows 10 Version 1607, it does not make any difference in updating to 1607 or installing a fresh copy of 1607.