Remote Desktop Connection
An authentication error has occurred.
The function requested is not supported
Remote computer: <hostname or ip address>
This could be due to CredSSP encryption oracle remediation.
For more information, see https://go.microsoft.com/fwlink/?linkid=866660
Open Local Group Policy Editor (executing gpedit.msc)
Navigate to Computer Configuration -> Administrative Templates -> System -> Credential Delegation
Double-click on Encryption Oracle Remediation the select Enabled and change Protection Level to Vulnerable click Apply then OK.