Cant remote manage Hyper-V host

Hi 

I have a Hyper-V host for my lab environment, i can connect using RDP and PS remoting but i cant use RSAT. 

The host is non domain or workgroup join but my manage computer is domain join whit another domain.

I tryded this:

https://tweaks.com/windows/67216/remotely-manage-a-nondomain-hyperv-server/

But i still get cant logon to it. Is it because management pc i domain join?

Did turn off all the FW but it didn't help :(

/Johan