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Could not load type IDataServiceUpdateProvider when using REST with SharePoint 2010

I wanted to use the new REST services in SharePoint 2010. But when I navigated to the ListData.svc service. I got the following error:

Screenshot displaying SharePoint 2010 showing the following error: "Could not load type 'System.Data.Services.Providers.IDataServiceUpdateProvider' from assembly 'System.Data.Services, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'."

First I checked if there was a System.Data.Services entry in the GAC (Global Assembly Cache). There was one with version 3.5.30729.1. So it wasn’t a case of a missing file.

Searching the web on the error Could not load type 'System.­Data.­Services.­Providers.­IDataServiceUpdateProvider' from assembly 'System.­Data.­Services, Version=3.5.0.0, Culture=­neutral, PublicKeyToken=­b77a5c561934e089' does not provide many hints to what is causing this error.
Most sites suggest to install ADO.NET Data Services v1.5 CTP2, but I already had.

I finally found the page by . He suggests to install the ADO.NET Data Services Update for .NET 3.5 SP1. As it turns out, this is the final release of the ADO.NET Services v1.5!

The update comes in two flavors.

For Windows 7 AND Windows Server 2008 R2

Download the ADO.NET Data Services Update for .NET Framework 3.5 SP1 for Windows 7 and Windows Server 2008 R2.

After installing the version of the System.Data.Services.dll file is 3.5.30729.5004.

For Windows 2000, Windows XP, Windows Vista, Windows Server 2003 AND Windows Server 2008

Download the ADO.NET Data Services Update for .NET Framework 3.5 SP1 for Windows 2000, Windows Server 2003, Windows XP, Windows Vista and Windows Server 2008.

After installing the version of the System.Data.Services.dll file is 3.5.30729.4466.

Testing

After I installed the update I browsed to the ListData.svc service.

Screenshot displaying the service description of a SharePoint 2010 Team Site as an atom feed.

The service description of a SharePoint 2010 Team Site as an atom feed.

19 Comments

  1. /

    Nice one this sorted my issue out!

  2. /

    Thanks, this was driving me nuts!

  3. /

    Thanks for figuring this out!!

  4. /

    This is perfect for me case. Thanks.

  5. /

    Thanks a lot. It really helped me.

  6. /

    Thanks for sharing!

  7. /

    Thank you ^_^

  8. /

    Thank you very much

  9. /

    Thanks! Great tip, helped me solve the same problem in no time

  10. /

    Thank you sir

  11. /

    THANKS

  12. /

    Thanks I'm starting with sharepoint and this take me oout of problem

  13. /

    Thanks. Works great.

  14. /

    Awesome. This solved my issue :)

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