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Home/ Questions/Q 7617843
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Editorial Team
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Editorial Team
Asked: May 31, 20262026-05-31T03:14:52+00:00 2026-05-31T03:14:52+00:00

I need to know if it is possible to start using the latest version

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I need to know if it is possible to start using the latest version of EF (4.3.1) with VS 2011 without having to install these CTP components as stated here.

I had these components installed but I removed them and since then I can’t add a new edmx file to .net 4 targeted project; it complains about missing reference to System.Data.Entity.

Do I need to re install VS 2011?

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  1. Editorial Team
    Editorial Team
    2026-05-31T03:14:53+00:00Added an answer on May 31, 2026 at 3:14 am

    After I removed and reinstalled Visual Studio, I still couldn’t get red of the error, so I used process monitor to log what Visual Studio is doing with System.Data.Entity as a path filter, turned out that Visual Studio was reading from

    C:\Windows\Microsoft.NET\assembly\GAC_MSIL\policy.4.0.system.data.entity v4.0_0.0.0.0__b77a5c561934e089\policy.4.0.system.data.entity.config

    which had binding to the

    System.Data.Entity.dll v 4.2.0.0

    once I cleared the file VS was worked like charm.

    The CTP uninstall left this out.

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