SPSecurity.RunWithElevatedPrivileges working on Windows Server 2003/SP2007 and not on 2008/SP2010

Question

I have this simple code in C# using SharePoint:

SPSecurity.RunWithElevatedPrivileges(delegate()
{
    SPSite site = new SPSite("http://localhost:333");
});

When I execute it on a Windows Server 2008 with SharePoint 2010 I get this error:

Retrieving the COM class factory for component with CLSID {BDEADF26-C265-11D0-BCED-00A0C90AB50F} failed due to the following error: 80040154.

When I execute it on Windows Server 2003 with SharePoint 2007 it works well.

Is there a problem in Windows or Sharepoint?
How can I get rid of this error?

Answer 1

Was your code compiled for 64-bit?

Answer 2

Try registering OWSSVR.DLL file located under ISAPI folder under 12-hive (MOSS 2007) or SharePoint root (Sharepoint 2010) folder. It is a COM library, you need to register using "REGSVR32 'FULL PATH TO DLL' command.

Answer 3

Goto your Visual Studio Solution Properties --> Set the Platform target as AnyCPU for Build option. It will fix the issue.

Answer 4

I tried the following step and it worked for me for the above error.

• Go to Solution Explorer and press Alt+ enter
• Select Any CPU in Build option and uncheck the box that says, Prefer 32-Bit.
• Save the changes and Build your solution.

Now You should be able to Run the program.

Hope this helps.

Answer 5

For SP2010, Take reference of Microsoft.Sharepoint.dll from 14 hive.You have to rebuild the project for 64 bit