SMB V3 on MS Server 2012 R2

Dear All, 

Got a problem with SMBv3, i am using MS Server 2012 R2(Server A) and i want to net use also at MS Server 2012 R2 (Server B)

but got a problem when i try to start from Server B to Server A using cmd command, got an error 

An extended error has occurred,and on my event viewer on smb application got and error Event 31013.

but when i try to change from server A to server B no error can start from cmd command.

any suggestions about my problem?

thanks