Why won't the MMC console run on a new server install.

I have hundreds of Citrix and Vmware servers. Decided to give Microsoft a try and was going to Migrate to them. Got a Server and installed Hyper-V On it. I did NOT join it to a domain. I completely patched it and all went well. Got a second server and installed Server 2012 R2 Standard. Fully patched it. Went into Hyper-V Manager and tried to connect to the Server and got a MMC error. It gives two options. Report to Microsoft and close or ignore error. When I ignore it gives me the following error, "FX:(922180d7-b74e-45f6-8c74-4b560cc100a5) Type"Microsoft.Virtualization.Client.Common.VirtualizationException' in assembly etc...and says SecurityKeyToken is not marked as serializable. Then at bottom it says Exception Type: System.Runtime.Serialization.SerializationException and has three Exception stack trace:....If I hit ok it closes.

I also formatted the server and installed Server 2012 R2 Standard and did NOT do any patches and I get the same thing. Neither server is joined to a domain. Both are workgroup with static IP's. After I hit ok and the error goes away, the following pops up.
aandoAsked:
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VB ITSSpecialist ConsultantCommented:
Got a Server and installed Hyper-V On it. I did NOT join it to a domain. I completely patched it and all went well.
What version of Windows did you install on this machine?
Got a second server and installed Server 2012 R2 Standard. Fully patched it. Went into Hyper-V Manager and tried to connect to the Server and got a MMC error.
Are you trying to use this server to connect to the above Hyper-V server?
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David Johnson, CD, MVPOwnerCommented:
is the hyper-v service running? is your hardware (cpu) have virtualization enabled?
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Thomas WheelerCommented:
Can you connect to it from a client running the  rsat tools?
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aandoAuthor Commented:
1. The Core Server with Hyper-V is just the Core. But it is the latest and greatest.
2. What I am doing is trying to "Manage" the Hyper-V Core Server with the Server 2012 R2 Standard through the MMC Console. I enabled remote management, added the services and roles, I opened up the Firewall ports needed and I can RDP into both servers from any machines. I can even RDP to the machine I am trying to manage. But when I try to go to Hyper-V Manager under administrative tools and connect to that Core Server the MMC errors out.
3. Hyper-V service is running. Bios should have visualization enabled.
4. Not sure on the RSAT tools question.
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aandoAuthor Commented:
Well I just figured it out. I added both machines to the Domain and it worked. When they are on a workgroup you get an error. But I added both servers to the domain and it immediately started working without making any other changes.
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aandoAuthor Commented:
I found the answer.
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Windows Server 2012

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