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I have a web application being developed on Windows 8.1, .NET 4.5.1, IIS 8.5 (under Integrated AppPool), Visual Studio 2013 over the default template that includes ASP.NET Identity, Owin, etc. and locally it works fine.
Then I uploaded it to a Windows Server 2008 using IIS 7.5 (Integrated Pipeline) Host and I get:
This operation requires IIS integrated pipeline mode.
Exception Details:
System.PlatformNotSupportedException: This operation requires IIS integrated pipeline mode.Stack Trace:
[PlatformNotSupportedException: This operation requires IIS integrated pipeline mode.] System.Web.HttpResponse.get_Headers() +9687046 System.Web.HttpResponseWrapper.get_Headers() +9 Microsoft.Owin.Host.SystemWeb.OwinCallContext.CreateEnvironment() +309 Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.GetInitialEnvironment(HttpApplication application) +246 Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.PrepareInitialContext(HttpApplication application) +15 Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContextStage.BeginEvent(Object sender, EventArgs e, AsyncCallback cb, Object extradata) +265 System.Web.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +285 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
I am unable to find anything except for directing the reader to change the pipeline from classic mode to integrated mode, which I already did with no success.
What can I do to fix the problem? Does "Microsoft.Owin.Host.SystemWeb" not like IIS 7.5 or something?
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Pipeline mode refers to how a Web server processes client requests. IIS 7 offers two pipeline modes. Integrated pipeline mode handles all requests through a unified pipeline because of the integration of ASP. NET's runtime with the Web server.
Once inside IIS Manager, Select Application Pools in the left pane. Once selected, the application pools available for your web server will be displayed on the right. To toggle the Management Pipeline Mode setting for this application pool, simply double click the application pool.
option-1: In Visual Studio goto WebSite/WebApplication properties and change Managed Pipeline Mode to 'Classic'. option-2: Open %userprofile%\documents\iisexpress\config\applicationhost. config and locate your site in "Sites" section and change the app pool to classic (say Clr4ClassicAppPool ).
Your Application Pool is in classic mode but your Application need integrated mode to fire. change it to Integrated Mode:
Open IIS Manager
Application Pool
Select pool that your app are run in it
In right panel select Basic Setting
Manage Pipeline Mode change to Integrated
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Try using Response.AddHeader instead of Response.Headers.Add()
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