When remoting to a PC you get the following similar error:
An Authentication error has occurred.
The function requested is not supported.
Remote computer: <servername>
This could be due to CredSSP encryption oracle remediation
To fix this I had to add the following registry key on the client machine:
I did have to create the key CredSSP and Parameters. Then create 32bit Dword vaule AllowEncryptionOracle