First i was using outlook 2007 with windows XP, later i bought a PC with windows Vista. When im trying to use outlook 2007 in vista this error message in comming up "the connection to Microsoft Exchange Server is unavailable. Outlook must be online or connected to complete this action" By the way im using VPN client to connect sever. i can logging to my mails by Outlook web access. Anybody have a solution for this problem. Thanx

Hi, Please firstly have a look regarding following articles http://support.microsoft.com/kb/939321/en-us http://support.microsoft.com/kb/927612/en-us In addition, please check the Application Log on Exchange Server, whether the 9646 event is logged? Mike