Could not load file or assembly ‘System.Web.Http 4.0.0 after update from 2012 to 2013

by

I did the upgrade according to.
http://www.asp.net/mvc/tutorials/mvc-5/how-to-upgrade-an-aspnet-mvc-4-and-web-api-project-to-aspnet-mvc-5-and-web-api-2

I get the error. Does any one else got this error?

Server Error in “https://stackoverflow.com/” Application.

Could not load file or assembly ‘System.Web.Http, Version=4.0.0.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its
dependencies. The located assembly’s manifest definition does not
match the assembly reference. (Exception from HRESULT: 0x80131040)
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.IO.FileLoadException: Could not load file
or assembly ‘System.Web.Http, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. The
located assembly’s manifest definition does not match the assembly
reference. (Exception from HRESULT: 0x80131040)

Source Error:

Line 48: Line 49: Line 50: } Line
51: Line 52: protected void Application_BeginRequest(object
sender, EventArgs e)

Source File:
d:\SM\7.4Test\WebAPIServerV2\ThirdPartyWebAPI\Global.asax.cs Line:
50

Assembly Load Trace: The following information can be helpful to
determine why the assembly ‘System.Web.Http, Version=4.0.0.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35’ could not be loaded.

=== Pre-bind state information === LOG: DisplayName = System.Web.Http, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
(Fully-specified) LOG: Appbase =
file:///D:/SM/7.4Test/WebAPIServerV2/ThirdPartyWebAPI/ LOG: Initial
PrivatePath = D:\SM\7.4Test\WebAPIServerV2\ThirdPartyWebAPI\bin
Calling assembly : ThirdPartyWebAPI, Version=1.0.0.0, Culture=neutral,
PublicKeyToken=null.
=== LOG: This bind starts in default load context. LOG: Using application configuration file:
D:\SM\7.4Test\WebAPIServerV2\ThirdPartyWebAPI\web.config LOG: Using
host configuration file:
C:\Users\michalc\Documents\IISExpress\config\aspnet.config LOG: Using
machine configuration file from
C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Post-policy reference: System.Web.Http, Version=4.0.0.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35 LOG: Attempting
download of new URL
file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary
ASP.NET Files/root/9184b2ea/c6d4b139/System.Web.Http.DLL. LOG:
Attempting download of new URL
file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary
ASP.NET
Files/root/9184b2ea/c6d4b139/System.Web.Http/System.Web.Http.DLL. LOG:
Attempting download of new URL
file:///D:/SM/7.4Test/WebAPIServerV2/ThirdPartyWebAPI/bin/System.Web.Http.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Major
Version ERR: Failed to complete setup of assembly (hr = 0x80131040).
Probing terminated.

Stack Trace:

[FileLoadException: Could not load file or assembly ‘System.Web.Http,
Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or
one of its dependencies. The located assembly’s manifest definition
does not match the assembly reference. (Exception from HRESULT:
0x80131040)] ThirdPartyWebAPI.WebApiApplication.Application_Start()
in d:\SM\7.4Test\WebAPIServerV2\ThirdPartyWebAPI\Global.asax.cs:50

[HttpException (0x80004005): Could not load file or assembly
‘System.Web.Http, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. The
located assembly’s manifest definition does not match the assembly
reference. (Exception from HRESULT: 0x80131040)]
System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext
context, HttpApplication app) +9935033
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr
appContext, HttpContext context, MethodInfo[] handlers) +118
System.Web.HttpApplication.InitSpecial(HttpApplicationState state,
MethodInfo[] handlers, IntPtr appContext, HttpContext context) +172
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr
appContext, HttpContext context) +336
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr
appContext) +296

[HttpException (0x80004005): Could not load file or assembly
‘System.Web.Http, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. The
located assembly’s manifest definition does not match the assembly
reference. (Exception from HRESULT: 0x80131040)]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9913572
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context)
+101 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest
wr, HttpContext context) +254

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18408

29 Answers
29

Leave a Comment