Question

I have a small web application. Which was working fine until I added two genericHandler in my application.

I have made the following changes for the http handler

 <system.web>
    <authentication mode="Forms" >
        <forms protection="All" timeout="720" defaultUrl="Default.aspx" loginUrl="Login.aspx" >
        </forms>
    </authentication>
    <authorization>
        <deny users="?"/>
    </authorization>
    <compilation debug="true" targetFramework="4.0" />

    <httpHandlers>
        <!--Code Log Handler-->
        <add verb="*" path="*.aspx" type="System.Web.UI.PageHandlerFactory" />
        <add verb="*" type="InfoDomeNewUI.Handler.SendOWA" path="SendOWA.ashx" />
        <add verb="*" type="InfoDomeNewUI.Handler.SendSOS" path="SendSOS.ashx" />
    </httpHandlers>
    <customErrors mode="Off">
        <error statusCode="404" redirect="Templates/PageNotFound.html" />
    </customErrors>
</system.web>
<system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <handlers>
        <!--Code Log Handler-->
        <add name="LogHandler1" path="SendOWA.ashx" verb="*" type="InfoDomeNewUI.Handler.SendOWA"/>
        <!-- SMS SENDER-->
        <add name="SendSOS" path="SendSOS.ashx" verb="*" type="InfoDomeNewUI.Handler.SendSOS"/>
    </handlers>
</system.webServer>

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.

I am using asp.net4.0 and C#. I am not using MVC
On local host it is working fine.

But when I am hosting the published code it is giving me the above error.

Stack Trace:-

[FileNotFoundException: 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.]
System.Web.Http.WebHost.SuppressFormsAuthRedirectModule.Register() +0

[InvalidOperationException: The pre-application start initialization method Start on type System.Web.Http.WebHost.PreApplicationStartCode 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..]
System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods) [phone]
System.Web.Compilation.BuildManager.CallPreStartInitMethods() +465
System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLeve

[HttpException (0x80004005): The pre-application start initialization method Start on type System.Web.Http.WebHost.PreApplicationStartCode 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..]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) [phone]
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +141
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +4866485

Answer 1

I found the problem. Instead of adding a class (.cs) file by mistake I had added a Web API Controller class which added a configuration file in my solution. And that configuration file was looking for the mentioned DLL (Microsoft.Web.Infrastructure 1.0.0.0).
It worked when I removed that file, cleaned the application and then published.