Unable to resolve service for type 'Microsoft.AspNetCore.Identity.UserManager` while attempting to activate 'AuthController'

Question

I\'m getting this error in Login Controller.

InvalidOperationException: Unable to resolve service for type \'Microsoft.AspNetCore.Identity.UserManager

Answer 1

If you're using "IdentityServer" so IdentityServer authenticates the user and authorizes the client.By default, IdentityServer is actually not about user management. But there is some support for asp.net Identity

So you need add :

services.AddIdentityServer()
    .AddAspNetIdentity<ApplicationUser>();