Hi,I don't know if it is an Exchange server issue or not (please move this topic to the right place if not, thank you)I have an user who wants to synchronize his calendar in outlook 2007 with his calendar in his private email address (windows live mail, latest version). He gets thiserror message Time: 4/24/2009 8:49:03 AMError in CalendarNetwork operation failedTime: 4/24/2009 8:49:03 AMError in CalendarSynchronization error.He is running 2 accounts in Outlook 2007 at his office : the professionnal one by Exchange server 2003 and his private email address (live.com), I already uninstall and re-install Outlook Connector.He got the same issue from home (outlook 2007). He is unable to see any changes in Outlook when hemodify the Live calendar (latest version). However he didn't get an error message. Anybody does have an idea? Thanks.

Hi Francois, Please create a new profile in Outlook and test the issue again. How to create a new e-mail profile in Outlook 2007 and in Outlook 2003http://support.microsoft.com/kb/829918/en-us At the same time, I suggest you contact our Live calendar support: https://support.live.com/eform.aspx?productKey=wlwebcalendar&ct=eformts Thanks, Elvis

Thank you Elvis,I created another profile to test it but it didn't work, no synchronization between calendars and tasks. I turn off my firewall too without success. Isuspect a restriction fromthe firewall of the company. I sent an email to Windows live support to get help. Thank you for your help.