I am running Hyper-V for years. Recently I tried to harden my environment by applying GPOs that disable NTLM, as NTLM is discouraged by Microsoft. Now Hyper-V VMConnect stopped working and I keep getting “An authentication error has occurred. The function requested is not supported … This could be due to CreSSP encryption oracle remediation. For more information, see https://go.microsoft.com/fwlink/?linkid=866660” if either client or server is running with NTLM disabled (I applied the GPO selectively for testing).
Did anyone succeed in disabling NTLM with Hyper-V-VMConnect? Which GPOs did you apply? Just for the basics, file sharing, RDP, Win-RM are working with NTLM disabled, at least as far as I tested. I am running a Samba AD.