I would like to ask you can I hide in Thin OS 7 system information window showing all the time after device starts and is there any possibility to authorize user once against active directory and have credentials forwarded to any created RDP session in connection manager (I have tried, but it only forwards user name and not password)
AD authentication is not supported. Only NTLM v1 is supported and this has to enabled in the DC in registry. Then you can use $UN and $PW to forward username and password to any RDP connection.