Correct fix for 404 error? .net 4.5 MVC error loading web service URL

Question

Using VS2012 I get a 404 error after clicking the "Invoke" button of a basic web service page (webservice.asmx).

I googled about and found many references to configurations in web.config and/or IIS having to do with the handling of requests that don't have extensions, including this: Getting 404 error on MVC web-site

That article indicated that the problem might be the Request Filtering configuration in IIS (my configuration was correct).

Another respondent said to fix the problem by adding this to web.config

<system.webserver>
<modules runAllManagedModulesForAllRequests="true"/> 

When I added this, it didn't fix my problem. What did fix it was also removing the following from the system.webserver section:

<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>

My revised web.config section now looks like this:

<system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <modules runAllManagedModulesForAllRequests="true" />
</system.webServer>

My web service now serves (and so to do my MVC pages). Is this the fix? Or is this a hack/cludge that will bite me later on?

Answer 1

In your RouteConfig.cs file add below line

routes.IgnoreRoute("{*x}", new { x = @".*\.asmx(/.*)?" }); 

i got solutions from https://stackoverflow.com/a/17058251/2318354

That's working fine