There is already an object named 'AspNetRoles' in the database

Question

Some time ago, I created a ASP.NET MVC 5 website with the Identity 1.0 version, and i created the Identity tables with this project. Now i have to make other website using t

Answer 1

For me, the problem couldn't be fixed by adding an empty migration. My problem was that the __EFMigrationsHistory table had been manually cleared. As a consequence, the context.Database.Migrate() method thought it had to apply all the missing migrations (missing entries in __EFMigrationsHistory). Simply add all the missing migrations in the db table and it should work again.