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Home/ Questions/Q 8618491
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Editorial Team
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Editorial Team
Asked: June 12, 20262026-06-12T06:07:25+00:00 2026-06-12T06:07:25+00:00

I saw it in this blog post , but that doesn’t actually say how

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I saw it in this blog post, but that doesn’t actually say how to “enable” it. And it seems that by default it isn’t enabled.

I know it’s an extension method, as defined here: http://msdn.microsoft.com/en-us/library/hh835786(v=vs.108).aspx but how do I get access to it? If I type Request.CreateErrorResponse then the compiler doesn’t recognize it.

I’m already using System.Net.Http.

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  1. Editorial Team
    Editorial Team
    2026-06-12T06:07:26+00:00Added an answer on June 12, 2026 at 6:07 am

    Are you still using pre-release or release version? There were a number of extensions that did not appear until just before the release and did not exist in earlier versions of the webapi release. I am unsure if this was one of them, but it may be what is causing your problem.

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