We are unable to authenticate to Tridion from a particular Windows 2016 Standard edition server. We can authenticate from other servers and from regular desktops using the same command and accounts/credentials.

We get this error message

New-IshSession : The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.

I've seen the faulted state error previously where invalid credentials are used but this is not the case here, the credentials are valid. And we get the same error when connecting to both ADFS and  ISHSTS Tridion servers, e.g using either

$ishSession = New-IshSession -wsBaseUrl https://adfs-server

OR

$ishSession = New-IshSession -wsBaseUrl https://ishsts-server -IshUserName username -IshPassword password

The Powershell version (5.1.14393.3053) and IshRemote version (0.9) are the same on this server as on a working server.

What can we look at to determine why the authenticate is not working from this server? We've rebooted the server to no avail. The server is running Jenkins but stopping the Jenkins service doesn't help. Also, we can log in to Tridion from that server using the web client.

thanks,

Barra