Could not load file or assembly microsoft.sharepoint.library on WSS server

Question

I am developing an application that creates an SPFarm object by calling the SPFarm.Open() method to access other Sharepoint Farms on an intranet.  When I run the application on a MOSS server, it functions perfectly as expected.

However, I have tried it on several WSS servers and it has worked on none of them.  If I am running it from a WSS server, getting the local farm, I receive the error:

Could not load file or assembly microsoft.sharepoint.library

If I am trying to access a remote farm, I get:

Could not load file or assembly microsoft.sharepoint.security

Shouldn't these DLLs have neeb installed by the wss installation?

Answer 1

microsoft.sharepoint.library this dll comes with WSS and it is installed into GAC, make sure that run your code under SPSecurity.RunWithElevatedPrivileges 

http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spsecurity.runwithelevatedprivileges.aspx

Answer 2

To verify whether it's installed in GAC, check "%windir%\assembly ".

Although it's installed in GAC, the installation directory maybe different.
The default directory is "%ProgramFiles%\Common Files\Microsoft Shared\web server extensions\12\ISAPI ".

Also, please notice that the version matters. Ensure that the versions of the assemblies are the same.

---

Keep It Simple and Stupid.

Answer 3

Try the following code:

SPFarm farm = SPFarm.Local;
SPWebService service = farm.Services.GetValue<SPWebService>("");

foreach (SPWebApplication webApp in service.WebApplications)
{
   
}

If you run as in above, you should not get error.  Try to run it using locally rather than running it remotely.