Please follow the step by step procedure to uninstall RDPlus:
– check that no user is connected to the RDPlus instance,
– in Windows, open the ‘Settings‘ menu and open ‘Apps‘,
– search RDPlus and click on ‘Uninstall‘
– once the un-installation has completed, reboot the server.
– after rebooting the server, open your usual admin session,
– manually delete this folder if still present: “c:\program Files (x86)\rdplus”