Application_BeginRequest not being fired during PUT API Calls on IIS Server

Question

Background

I have an MVC Application with a WebAPI component. I'm using jQuery and AJAX to pass and receive data from the WebAPI. I rely on the Application_BeginRequest being fired during each call to perform some mundane task.

Problem

Application_BeginRequest always fires for GET and POST calls to the WebAPI. However, when I make PUT call to the WebAPI, the Application_BeginRequest does not fire, causing the application to not run the task. The PUT call is actually received, because the corresponding method in the controller is being executed.

I have PUT enabled in my web.config file (below). How do I enable PUT method calls to trigger the Application_BeginRequest method?

Note : Application_BeginRequest fires for PUT calls when using IIS Express, but not when using the full version of IIS.

Project : The full project can be downloaded here : BeginRequestFail.zip

Web.Config

<?xml version="1.0" encoding="utf-8"?>
<configuration>

  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <pages>
      <namespaces>
        <add namespace="System.Web.Helpers" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Optimization" />
        <add namespace="System.Web.Routing" />
        <add namespace="System.Web.WebPages" />
      </namespaces>
    </pages>
  </system.web>
  <system.webServer>
    <httpErrors errorMode="Custom" existingResponse="PassThrough">
      <remove statusCode="404" subStatusCode="-1" />
      <remove statusCode="403" subStatusCode="-1" />
      <remove statusCode="500" subStatusCode="-1" />
      <error statusCode="404" path="/Error/404" responseMode="ExecuteURL" />
      <error statusCode="403" path="/Error/403" responseMode="ExecuteURL" />
      <error statusCode="500" path="/Error/500" responseMode="ExecuteURL" />
    </httpErrors>
    <validation validateIntegratedModeConfiguration="false" />
    <modules>
      <remove name="UrlRoutingModule-4.0" />
      <add name="UrlRoutingModule-4.0" type="System.Web.Routing.UrlRoutingModule" preCondition="" />
      <remove name="WebDAVModule"/>
    </modules>
    <handlers>
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
      <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.Core" publicKeyToken="2780ccd10d57b246" />
        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="DotNetOpenAuth.AspNet" publicKeyToken="2780ccd10d57b246" />
        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.1.0.0" />
      </dependentAssembly>
      <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>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
      </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" culture="neutral" />
          <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
        </dependentAssembly>
      </assemblyBinding>
  </runtime>
</configuration>

Global.asax.cs

protected void Application_BeginRequest(object sender, EventArgs e) //Not triggered with PUT
        {
            Application["BeginRequest"] = _Scounter++;
        }

Answer 1

Go to IIS Features mode --> Click on Handler Mappings --> Scroll through the list and locate Extensionless URL Handler --> Check all handlers before that handler to see if any thing else is registetred to handler PUT request hence hijacking PUT before it hits extensionless url handler. Hope that helps