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Asked: 2026-05-18T06:39:37+00:00

I am working on a WPF application that requires .NET 4.0 to run. The

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I am working on a WPF application that requires .NET 4.0 to run. The machines on the enterprise are all running .NET 3.5 SP1. Is it possible to deploy the application with its .NET 4 DLLs without having to install the full .NET 4 Framework on the client machines?

There are two parts of our implementation marries us to .NET 4.0

  1. The use of the Data Grid user control (this is the easiest issue to overcome).
  2. The use of the enableUnsecuredResponse property for my WCF binding.
<bindings>
  <customBinding>
    <binding name="CadsBinding">
      <textMessageEncoding messageVersion="Soap11"/>
      <security enableUnsecuredResponse="true" authenticationMode="UserNameOverTransport" allowInsecureTransport="true">
        <secureConversationBootstrap/>
      </security>
      <httpTransport authenticationScheme="Basic"/>
    </binding>
  </customBinding>
</bindings>

Microsoft has release the following Hot Fix: A hotfix that enables WCF to send secured messages and to receive unsecured responses, and to send unsecured messages and to receive secured responses, is available for the .NET Framework 3.5 SP1 but if I am to deploy this Hot Fix to the enterprise, I might as well do that for the .NET 4.0 Client Profile and resolve all my issues then and there.

I am aware of the .NET 4.0 Client Profile installation. What I’m trying to avoid is the need to push out the installation of the framework for just my application.

My Current Thought:
It can’t be done. Even if I deploy the .NET 4 DLLs that are referenced, they will still try to be handled by an older version of the CLR which won’t be able to understand them.

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1 Answer

  1. Editorial Team

    You are going to need .NET 4, but there is the Client Profile

    The .NET Framework 4 Client Profile is a subset of the .NET Framework 4 that is optimized for client applications. It provides functionality for most client applications, including Windows Presentation Foundation (WPF), Windows Forms, Windows Communication Foundation (WCF), and ClickOnce features. This enables faster deployment and a smaller install package for applications that target the .NET Framework 4 Client Profile.

    This is a smaller download and smaller footprint version of the framework.

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