System.Web.Mvc not functioning as expected after Windows Update

Question

After yesterday\'s Windows Update, I seem to have issues building my projects.

Related Windows Updates could be:
ASP.NET MVC 2.0: KB2993939
ASP.NET MVC 3.0:          


        

Answer 1

There are two ways to fix this:

Option 1: Add Microsoft.AspNet.Mvc using NuGet

Use NuGet to add the latest revision of the MVC version you depend on to your project. Microsft recommends this approach.

Option 2: Update assembly reference

If you add a new assymbly reference to your project you'll see that the System.Web.Mvc assemblies are now versioned x.0.0.1.

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Source: http://blogs.msdn.com/b/webdev/archive/2014/10/16/microsoft-asp-net-mvc-security-update-broke-my-build.aspx

I would suggest against bluntly attempting reinstalling MVC. Allthough it worked for me in the end, you'll run into trouble with NuGet being bundled with the MVC installer.

You need to uninstall NuGet prior to reinstalling MVC because NuGet still being present causes the MVC installer to refuse to install or to fail.

In addition I don't see why reinstalling MVC will prevent Windows Update from applying the update again after you reinstalled MVC.