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

We have the same problem.
Microsoft changed the Version from 3.0.0.0 to 3.0.0.1
I guess this is the reason Visual Studio can't find the reference, because the regular setting is "Use specific version - true".
In my case i can't change the setting to false, because I am using Mvc4 on the same machine and it would automatically use the version 4 dll.

A solution is to remove the project reference of System.Web.Mvc.dll and add it again. Then VS will use the Version-3.0.0.1-DLL as a reference.

Answer 2

I have same problem today after windows update. There is my solution.

Install-Package Microsoft.AspNet.Mvc -Version 5.2.0.0 -Project PROJECTNAME

Also you can try use these code maybe it helps.

Uninstall-Package Microsoft.AspNet.Mvc -Force

Goodluck.

Answer 3

The recent updates have incremented version numbers

3.0.0.0 -> 3.0.0.1 and 4.0.0.0 -> 4.0.0.1

I had to remove the reference and re-add (System.Web.Mvc is found in Assemblies >Extensions are of the Add Reference dialogue)

Answer 4

Reinstall the MVC assembly

download link : http://www.microsoft.com/en-US/download/details.aspx?id=30683

Answer 5

I had same issue recently.

After Windows Update - my project in Visual Studio suddenly had 500+ errors - all related to system.web.mvc

So I deleted the reference and re-added it - found in C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 3\Assemblies

Great - project compiles.

Put it on site - get "Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information"

After much messing around, I went to site, downloaded the version of it off there - referenced it - it worked on my laptop AND on site

phew!!!!!!!

Answer 6

As the patch has incremented the version number has risen from (for MVC4 it has risen from 4.0.0.0 to 4.0.0.1) the Reference Path in the project files needs to change from:

<Reference Include="System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <Private>True</Private>
  <HintPath>..\bin\System.Web.Mvc.dll</HintPath>
</Reference>

to

<Reference Include="System.Web.Mvc, Version=4.0.0.1, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>..\bin\System.Web.Mvc.dll</HintPath>
</Reference>

Obviously adjust the hint path as appropriate, and make similar changes for other versions of MVC