Could not load file or assembly 'Microsoft.Web.Infrastructure,

Question

I tried to upload my web site to a server. It was working fine with my local host, so I uploaded everything in my localhost wwwroot folder to the server and changed the connection string.

But there is this error:

Exception information:      Exception type: InvalidOperationException      Exception message: The pre-application start initialization method Start on type RouteDebug.PreApplicationStart threw an exception with the following error message: Could not load file or assembly 'Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified..    at System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods)    at System.Web.Compilation.BuildManager.CallPreStartInitMethods()    at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException)  Could not load file or assembly 'Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.    at RouteDebug.PreApplicationStart.Start() 

The project was nopcommerce.

What should be done to resolve this error?

Answer 1

You will need to include the dll with your project and add a reference to it as well.

Here is a link to a similar issue already on Stack: MVC3 Deployment Dependency Problems

Answer 2

It turns out after doing a Reference Cleaning, it removed Microsoft.Web.Infrastructure, but not from the packages.config file. After trying to add it again using the Package Manager Console, Visual Studio says that it is already installed which is false because it was removed.

I then removed the line of code in the packages.config file

<package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" /> 

and ran the command again

PM> Install-Package Microsoft.Web.Infrastructure 

After this, now it works fine.