Could not load file or assembly 'Microsoft.Sharepoint.Sandbox' or one of its dependencies

Question

I created an ASP.net webapplication and i have used assemblies Microsoft.SharePoint; and Microsoft.Office.Server.UserProfiles in it.. i get a run time error

"Could not load file or assembly 'Microsoft.Sharepoint.Sandbox' or one of its dependencies. An attempt was made to load a program with an incorrect format. "

in it.

How to resolve this?

Answer 1

From microsoft and i agree, you need the correct version from the gac and reference it into your project. Once you add the reference you need to set "copy to local" as false ;)

this will work and what i would do if i ran into any dll issue!

step by step:

To copy the dll, goto start - select or search for "run" and copy past this code:

%windir%\assembly\GAC_64\Microsoft.Sharepoint.Sandbox\14.0.0.0__71e9bce111e9429c

add reference to your project, right click on the reference Microsoft.SharePoint.Sandbox.dll and click on "properties" set copy to local = false

build and run project, should work fine :)

http://blogs.technet.com/b/sharepointdevelopersupport/archive/2012/07/24/building-silverlight-solution-with-ria-service-enabled-fails-on-sharepoint-2010-sp1-environments.aspx

Answer 2

According to this blog post by Louis Liang, the workaround is to add a post-build event and delete the DLL:

cd $(TargetDir)
del Microsoft.SharePoint.SandBox.dll

Taken from :

http://stackoverflow.com/questions/11435715/how-can-i-stop-microsoft-sharepoint-sandbox-dll-from-being-copied-into-my-bin-fo