External Storages Windows Server

I’m able to mount SMB External Storages from a Windows 10 ver 2004 without issue.
I’m able to mount SMB External Storages from a Windows 7 without issue.
I’m able to mount SFTP External Storages from Ubuntu Lunux without issue.

I cannot mount any SMB External Storages from Windows Server 2012 R2 , it simply do not work.
I need to do it beacause doing so I can make a Web-Front-End for my windows “storage” server.