The Web application at ‘’ could not be found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application.

Hi All,

When accessing SPSite object if you received above error message please try with changing target platform from x86 to x64.
I solve this problem by doing so. If you still not having any luck by trying above solution feel free to refer to below link -

http://share-useful-links-here.blogspot.in/2012/04/web-application-at-could-not-be-found.html

Thanks...!