Hi Sir,
>>Both with logged user both Administrator of hyper-v host.
Please try to logon windows 10 server with hyper-v admin account then connect to hyper-v 2012R2 without using "connect as another user account" .
In my lab , I used hyper-v admin account to logon that windows 10 computer then connect to windows 2012R2 hyper-v host ,it worked .
If I try to connect to windows 2016 / win10 hyper-v , "connect as another user account" works perfectly .
Best Regards,
Elton
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