I tried to run the command \'Enable-Migrations\' in a new project and I got the message:
PM> Enable-Migrations The term \'Enable-Migrations\' is not recog
downgrade to 6.2 helped me. .NET Framework version 4.6.1 Project in old format(non .NET Standard) Visual Studio should be open with Admin rights for initial migration. I guess EF with version above 6.2 require latest .NET Framework.