When i try to login in group chat admin tool using automatic configuration, i get an error saying "Cannot establish a network connection. Make sure you are connected to netwrok and try again." When i try login using manual configuration, i get " Cannot sign in because of invalid certificate. Please contact your system administrator." What shud i do? where had i made mistake?

Hi,This is Exchange Server forum, we foucs on Exchange Server issue. Regarding your issue, I suggest writing a post on our OCS newsgroup:http://www.microsoft.com/communities/newsgroups/en-us/default.aspx?dg=microsoft.public.livecomm.general&mid=51b49d56-d9ad-417b-9b10-992b336ee6deThanks,Elvis