I have installed ASP.NET Core 2.1
but even though I have created a new ASP.NET Core Web Application
using ASP.NET Core 2.1
with Individual User Accounts
→ Store user accounts in-app
I can't find the AccountController or Views.
I can still register and login without a problem but I can't find the code for it, it were present in 2.0.
ASP.NET Core 2.1 introduced new feature called Razor class libraries that lets you build views and pages as part of reusable library. ASP.NET Core Identity was moved to such RCL. You can override it in your project:
For more information visit documentation.