This blog post comes courtesy of Todd Logan, a colleague at Microsoft.
Use the following steps to resolve a name mismatch error when viewing the remote desktop connection of a VM on a Hyper-V host through VMM (using the Virtual Machine Viewer application). The VMM server in this case is running as a virtual machine.
When you execute the "Connect to virtual machine" action from the VMM Administrator Console, you will get the following error: "The remote computer could not be authenticated due to problems with its security certificate. It mabe be unsafe to proceed". In this case, the popup with the error will give you the Name mismatch parameters. For example:
Requested remote computer: 192.168.1.250
Name in the certificate from the remote computer: democomputer.redmond.contoso.corp.com
How to troubleshoot and fix this issue:
a. Certificates - Current User -> Personal -> Certificates
b. Computer (Local Computer) -> Personal -> Certificates
c. Computer (Local Computer) -> Trusted Root Certification Authorities