I am tryng to get count of user profiles via UserProfileService web serivce (Sharepoint Server 2010), but for all users(except sharepoint system acount) returned
Operation Failure ---> Access Denied: Only an administrator may retrieve a count of all users.
With sharepoint system acount (say 'domain\megauser') it is work as expected.
I try add other users to farm administrators group, site collection administrators group, but it did not help - same error.
Can I give even more rights for user(more than farm administrator)? Or UserProfileService require some special permissions?