Entry point was not found exception

Question

I have installed vs2012 (11.0.50727.1),
I opened a new MVC4 with .NET 4.5 solution,
i create a simple HomeController and as I've wanted to start it locally, i have received this very strange error:
How can resolve it? What is this error and why it's happens???

Thank you in advance, for any of your help.

    Server Error in '/' Application.
Entry point was not found.
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.EntryPointNotFoundException: Entry point was not found.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[EntryPointNotFoundException: Entry point was not found.]
   System.Web.Mvc.IDependencyResolver.GetService(Type serviceType) +0
   System.Web.Mvc.DependencyResolverExtensions.GetService(IDependencyResolver resolver) +56
   System.Web.Mvc.SingleServiceResolver`1.GetValueFromResolver() +44
   System.Lazy`1.CreateValue() +180
   System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() +22
   System.Lazy`1.get_Value() +10749357
   System.Web.Mvc.SingleServiceResolver`1.get_Current() +15
   System.Web.Mvc.MvcRouteHandler.GetSessionStateBehavior(RequestContext requestContext) +121
   System.Web.Mvc.MvcRouteHandler.GetHttpHandler(RequestContext requestContext) +33
   System.Web.Mvc.MvcRouteHandler.System.Web.Routing.IRouteHandler.GetHttpHandler(RequestContext requestContext) +10
   System.Web.Routing.UrlRoutingModule.PostResolveRequestCache(HttpContextBase context) +9709656
   System.Web.Routing.UrlRoutingModule.OnApplicationPostResolveRequestCache(Object sender, EventArgs e) +82
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929

score 24 · Answer 1 · answered Apr 01 '13 at 16:38

I have converted a project from MVC3+.NET4 to MVC4+.NET4.5 and I receive the exception Entry point was not found when invoking a controller's action.

My solution was to insert an assembly binding redirect inside web.config to point at MVC 4 assemblies:

  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>

I don't know the exact cause of the problem, maybe some third party library that still references MVC3.

Unity IoC container for MVC3 (used in MVC4) needs these bindings as well. — hross, Sep 24 '13 at 21:12
This solution worked for me. I'd updated to MVC 4, but my binding redirect oldVersion was still pointing at 1.0.0.0-2.0.0.0, and newVersion at 3.0.0.0. Hopefully in the future a more useful error message will indicate that a config entry is the problem, rather than saying the entry point can't be found. — Irish, Dec 12 '13 at 16:59

score 23 · Accepted Answer · edited Nov 08 '16 at 17:02

23

The same error appears when you switch you project from MVC3 to MVC4 and forget to change System.Web.WebPages.Razor, Version=1.0.0.0 to System.Web.WebPages.Razor, Version=2.0.0.0 in the web.config.

edited Nov 08 '16 at 17:02

Liam

27,717
28
128
190

answered Feb 19 '13 at 11:04

Denis

514
5
8

score 11 · Answer 3 · answered Nov 12 '14 at 14:56

11

Old post but if you encounter it prior to the mvc woes (System.Mvc.dll update e.g x.0.0.1) you could check the bindingRedirect tag(4.0.0.0 -> 4.0.0.1)

<dependentAssembly>
    <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
    <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.1" />
  </dependentAssembly>

answered Nov 12 '14 at 14:56

Ehm

113
1
9

This fixed it for me... I had to do this when upgrading because of the MVC update. Thanks! – derivation Dec 09 '14 at 00:56
finally, something worked for me. Thank you – girish kolte Jul 01 '21 at 08:56

score 7 · Answer 4 · edited Mar 26 '16 at 11:23

7

If you are catching this error in WebAPI Controller - you need fix binding version of System.Web.Http

<dependentAssembly>
    <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
</dependentAssembly>

edited Mar 26 '16 at 11:23

Thomas Bormans

5,156
6
34
51

answered Sep 24 '14 at 07:12

ZOXEXIVO

920
9
21

score 3 · Answer 5 · answered Jul 23 '13 at 13:02

3

you should also check that all of the projects in your solutions reference the latest versions of the dll's, and that there are no inconsistent versions being used by different sub-projects.

despite running nuget uninstall, install and update I found the tests project was referencing an old version of the system.net.http

answered Jul 23 '13 at 13:02

GreyCloud

3,030
5
32
47

Thanks ! I was using differents versions... shame on me – Apolo Aug 26 '15 at 15:16

score 3 · Answer 6 · answered May 17 '14 at 13:02

3

If you are using .net 4.5 and adding a binder to ModelBinders.Binders collection from a .net 4.0 library you will also get such error.

answered May 17 '14 at 13:02

miyconst

483
4
8

score 2 · Answer 7 · answered Dec 14 '12 at 20:56

Do you have something like this in your Global.asax.cs?

private static void InitializeDependencyInjectionContainer(HttpConfiguration config)
{
    container = new UnityContainer();


    container.RegisterType<Site.Web.Data.IDatabaseFactory, Site.Web.Data.DatabaseFactory>();
    container.RegisterType<Site.Web.Data.Interfaces.IUnitOfWork, Site.Web.Data.UnitOfWork>();
    container.RegisterType<Site.Web.Data.Interfaces.IUserRepository, Site.Web.Data.Repositories.UserRepository>();
    container.RegisterType<Site.Web.Data.Interfaces.ISiteRepository, Site.Web.Data.Repositories.SiteRepository>();

From the stack trace you posted System.Web.Mvc.IDependencyResolver.GetService(Type serviceType) +0 would suggest one (or more) of your dependencies don't resolve.

You could try commenting one or more of them out and try to narrow down which one is failing to resolve.

No, in MVC there is allot of entry points for Di, that's not it. — hackp0int, Dec 16 '12 at 09:59

score 0 · Answer 8 · answered Oct 16 '14 at 10:06

Old post but just to add for anyone looking

This seems like a catch all error. I got it when my web.config used an external section and that section was excluded from the Visual Studio project, i.e. using this

<sessionState configSource="SystemWeb.config" />

score 0 · Answer 9 · answered Nov 10 '15 at 18:29

0

Try this.. in visual studio go to Package Administrator Console and type:

update-package

answered Nov 10 '15 at 18:29

Mr. DMX

653
2
9
20

score 0 · Answer 10 · answered Jan 22 '16 at 14:17

0

I faced this problem and solved it by
1. uninstall-Package Microsoft.AspNet.Mvc (I need to uninstall something else before I can uninstall AspNet.MVC successfully)
2. Install-Package Microsoft.AspNet.Mvc -Version 4.0.20710
3. Rebuild and deploy

answered Jan 22 '16 at 14:17

Chinh Phan

1,459
19
22

score 0 · Answer 11 · edited Jun 20 '20 at 09:12

Not MVC specific in my case, but had just started getting this error:

Server Error in '/' Application.

Entry point was not found.

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.EntryPointNotFoundException: Entry point was not found.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[EntryPointNotFoundException: Entry point was not found.]

...

System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +8008

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1055.0

What caused that was that I had published to the webserver folder from Visual Studio and selected to Precompile the app (using a .NET 4.5 project), with allow precompiled site to be updateable setting btw.

Probably my issue was that the site is running at .NET 4.0 on IIS, whereas the precompiled version placed in bin folder during the publish action was for 4.5. When I removed the "bin" folder from the website it run fine again.

score -2 · Answer 12 · answered Dec 19 '16 at 08:58

-2

Just update "System.Web.Mvc" with "nuget"

answered Dec 19 '16 at 08:58

Milad

31
4

Entry point was not found exception

12 Answers12

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