So you need to update from MVC 3.0.0.0 to MVC 3.0.0.1 or should I say your windows update tool caused you to update.
Refer to this article
Then open package manager for nuget and make sure it is pointed to the correct project..
Usually your root mvc application
Then type in the console : get-package
It will list out your installed packages
See if your framework number is: 3.0.50813.1 for Microsoft.AspNet.Mvc
if not, then you will need to update your solution projects
The COmmand is: Install-Package Microsoft.AspNet.Mvc -Version {hit the tab key.. find the version you need – in my case 3.0.50813.1} and select it.. Run it and you should be done…
Note you might get a sql lite issue.. See https://warrenlafrance.com/2016/03/08/sql-lite-error/