System.web.mvc missing

Question

We have an old ASP.NET MVC 3 Web Application, building in VS2010, that fails to compile, since last week\'s security update.

The problem is that the reference to Sys

Answer 1

Just in case someone is a position where he get's the same error. In my case downgrading Microsoft.AspNet.Mvc and then upgrading it again helped. I had this problem after installing Glimpse and removing it. System.Web.Mvc was references wrong somehow, cleaning the solution or rebuilding it didin't worked in my case. Just give it try if none of the above answers works for you.

Answer 2

Add the reference again from ./packages/Microsoft.AspNet.Mvc.[version]/lib/net45/System.Web.Mvc.dll

Answer 3

Had this problem in vs2017, I already got MVC via nuget but System.Web.Mvc didn't appear in the "Assemblies" list under "Add Reference".

The solution was to select "Extensions" under "Assemblies" in the "Add Reference" dialog.

Answer 4

I have the same situation: Visual Studio 2010, no NuGet installed, and an ASP.NET application using System.Web.Mvc version 3.

What worked for me, was to set each C# project that uses System.Web.Mvc, to go to References in the Solution Explorer, and set properties on System.Web.Mvc, with Copy Local to true, and Specific Version to false - the last one caused the Version field to show the current version on that machine.

Answer 5

The sample mvcmusicstore.codeplex.com opened in vs2015 missed some references, one of them System.web.mvc.

The fix for this was to remove it from the references and to add a reference: choose Extentions under Assemblies, there you can find and add System.Web.Mvc.

(The other assemblies I added with the nuget packages.)

Answer 6

in VS 2017 I cleaned the solution and rebuilt it and that fixed it