Could not load file or assembly 'DotNetOpenAuth.Core

Question

I get the following error when I start my asp net mvc 4 application:

Could not load file or assembly \'DotNetOpenAuth.Core, Version=4.0.0.0, 
Culture=neutral         


        

Answer 1

I was able to resolved it on my end by removing Microsoft.AspNet.Membership.OpenAuth

Answer 2

By installing the following two packages I resolved this problem on VS2012 Professional Update 4 RC:

1. Open the Package Manager Console from the Menu:

   Tools| Library Package Manage | Package Manager Console

2. Install-Package DotNetOpenAuth.AspNet

3. Install-Package Microsoft.AspNet.WebHelpers

Hope this helps for you!!!

Answer 3

In case this helps anyone - I was unable to uninstall the DotNetOpenAuth components through Nuget, so I resolved this error by deleting them from the references list directly and then re-installing dotnetopenauth through nuget.

Answer 4

Simply remove BIN folder from wwwroot, and publish again.

Answer 5

Remove any Microsoft.Web.WebPages.OAuth dependencies everywhere in your projects.

Answer 6

In my case the MVC4 application was running fine in the VS2012 debugger, but I was getting the "Could not load file or assembly 'DotNetOpenAuth.Core'" error when I publish the application on the server.

Checking the "Delete all existing files prior to publish" checkbox on the settings tab of Publish Web window solved the issue.