https://blogs.technet.microsoft.com/mckittrick/unable-to-rdp-to-virtual-machine-credssp-encryption-oracle-remediation/ https://blogs.technet.microsoft.com/mckittrick/unable-to-rdp-to-virtual-machine-credssp-encryption-oracle-remediation/ I used the information above to correct the issue, setting the setting to Vulnerable and then had to restart the RDP sessions. Tagged: CredSSPRDP