Windows 8.1 Clients cannot connect to RDS server in different domain

Hello

I work in an environment where service desk operatives are in one domain (domain A for example) and they need to be able to RDP to a management server which is a Windows RDS server in a different domain (domain B for example).  The clients from which they are RDPing are Windows 8.1 and they are trying to RDP to a Windows 2012R2 RDS server.
RDP Connection Error Message.The error message that is received is "The connection has been terminated because an unexpected server authentication certificate was received from the remote machine".  Also see attached for screen shot.

I believe that this may be because all connections to a Windows 2012 are secured with a certificate and that when a Windows 8.1 client from another domain tries to establish a connection it is unable to check the Certificate Revocation List to determine the validity of the cert.

Has anyone come across this before and been able to get round the issue?

Cheers
V.
LVL 1
vision_onAsked:
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JohnBusiness Consultant (Owner)Commented:
I connect from my Windows 8.1 Pro machine to a client Server 2012 in the RPD session as follows:  DOMAIN\username in the user name window and then password in the password window. That has worked for me.
Manikandan NarayanswamySecurity Specialist & IBM Security GuardiumCommented:
Hi,

Do you mean to say that your RDS server is protected with a Private certificate issued by an enterprise CA. Anyways refer the below the links this will solve your problem

https://donaldc.wordpress.com/2009/08/25/revocation-check-could-not-be-performed-for-the-certificate/
https://social.technet.microsoft.com/Forums/en-US/394e15eb-2aeb-4aea-aea4-d28c0b867db6/server-authentication-certificate-error-for-remote-desktop-connection?forum=windowsserver2008r2general

Thanks
Manikandan

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