I am working on an application which accesses a x.509 certificate from the current user store. This works fine when the application is run as an executable. However, when I try running the app as a windows service, it fails to find the certificate. I tried changing the LogOn property for the windowsservice console to set the right user, but that did not help. Is there any way I can access the particular user's (Administrator) certificate store? I am bound to use the certificate in the user store - else I can easily use the local machine store. Any help will be appreciated.