When a local computer running Windows attempts to set up a remote desktop connection to a Windows ECS using RDP, such as MSTSC, an error occurs. The system displays the possible cause "This could be due to CredSSP encryption oracle remediation."
Microsoft released a security patch in March 2018, which may affect RDP-based CredSSP connections. As a result, setting up RDP-based connections to ECSs failed. For details, visit Unable to RDP to Virtual Machine: CredSSP Encryption Oracle Remediation.
Modify the remote desktop connection settings on the Windows ECS. To do so, perform the following operations: