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The first time an Asp.Net MVC Core 2 application with Authentication is called, the error occurs:

A database operation failed while processing the request.


URL: https://localhost:44328/Account/Register




Open Packet Manager Console and type Update Database


Complete error message

A database operation failed while processing the request.

SqlException: Cannot open database "aspnet-Auth01b-D7FBAB0F-A682-4F66-924E-A3CE4E1F6A0B" requested by the login. The login failed. Login failed for user 'DESKTOP-F634M99\Raimund'. 

Applying existing migrations for ApplicationDbContext may resolve this issue

There are migrations for ApplicationDbContext that have not been applied to the database
  • 00000000000000_CreateIdentitySchema

In Visual Studio, you can use the Package Manager Console to apply pending migrations to the database:

PM> Update-Database
Alternatively, you can apply pending migrations from a command prompt at your project directory:

> dotnet ef database update



Subject: Asp.Net MVC Core 2 EF


Set upload of very large files in Asp.Net MVC Core 2.
Error: Identity column can not be updated, IDENTITY_INSERT is set to OFF
Asp Error: IDENTITY_INSERT OFF when accessing AspNetUsers registry
ASP IIS Error: 440.13 Not Found. upload file size is exceeded
InvalidOperationException: An exception occurred while reading a database value for property
A database operation failed while processing the request. SqlException: Invalid object name
InvalidOperationException: No database provider has been configured for this dbContext
NullReferenceException: Object reference not set to an instance of an object.
InvalidOperationException: The expected type was System.Boolean but the actual value was null.
Asp: InvalidOperationException: The model item passed into the ViewDataDictionary is of type


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