在MVC项目的引用中找不到文件异常

Question

When I start up ASP.NET MVC project in Visual Studio, I get this error:

File not found exception wasn't handled in the user code An exception of type 'System.IO.FileNotFoundException' occurred in
System.Web.Mvc.dll but was not handled in user code

Additional information: Could not load file or assembly 'System.Web.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Answer 1

Update:

As it seems, @alorika's answer was the correct one (Missing reference to System.Web.Razor )

Old answer:

Which version of Visual Studio are you using? Which version of MVC? What I would try as first is to repair the installation. Just go to Control panel -> Installed programs -> Select VS and click on change/repair.

On the window that opens, select repair and let the program run.

If that doesn't help, go again to all programs and again select VS and then click on repair. But this time, in the VS window, which opens select modify and make sure, that "Microsoft Web Developer Tools" is checked (if it is not, check it and hit "Update"):