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I need HTTP Activation installed on the server (Windows 2008 R2 Standard). .Net 4 is verified as installed, yet there is no listing under Features for .Net Framework 4.0... But .Net 3.5.1 is listed.

What needs to be done to get .Net 4.0 features installed?

Thanks

Lex Li
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user167908
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  • possible duplicate of [WCF with 3.5 and 4.0 together](http://stackoverflow.com/questions/2675428/wcf-with-3-5-and-4-0-together) – Lex Li Apr 04 '14 at 05:45

2 Answers2

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Windows Server 2008 R2 was released on July 22, 2009.

http://en.wikipedia.org/wiki/Windows_Server_2008_R2

At that time, .NET 4 was not yet released (which was finally released on April 12, 2010),

http://en.wikipedia.org/wiki/.NET_Framework_version_history

Thus, you can only see .NET 3.5 related features in Server Manager.

All .NET 4 bits need to be manually installed and configured aside (such as running aspnet_regiis and ServiceModelReg).

Lex Li
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In Windows Server 2008 if you enabled this feature for .NET 3.5 and then install .NET 4.0 this will be installed and enabled for .NET 4.0. If this was not enabled before .NET 4.0 install then this is a little bit more difficult. Probably the easiest way is to enable this feature for 3.5 and reinstall .NET 4.0...

See following related question "WCF .NET 4.5 on Windows Server 2008 R2" on StackOverflow.

Community
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Mikhail
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