With the default templates, the user is redirected to the `Account.RegisterConfirmation` where they can select a link to have the account confirmed. The default `Account.RegisterConfirmation` is used ***only*** for testing, automatic account verification should be disabled in a production app.
To require a confirmed account and prevent immediate login at registration, set `DisplayConfirmAccountLink = false` in `/Areas/Identity/Pages/Account/RegisterConfirmation.cshtml.cs`: