New user creation option not available in SSMS sql server 2106 , how to enable?
My guess is that your installation of SSMS is messed up. Try using SSMS on a different machine and see if you get the same behaviour there.
If it is SSMS that is messed up, then I suggest you just install the most recent version of SSMS and work with that. Hopefully that will sort things out for you.
(I initially thought that you might not have permissions to create a user, but I tried that and SSMS still gave me a &quot;new user&quot; option, but at a later stage I would get an error that I don't have permissions to create a user.)
You can of course always use the CREATE USER command from a query window.