[Ispat]

First of all let me know which Microsoft Exchange Server you are using. i have introdued some tips

Calendar synchronization only occurs from the Microsoft® Outlook® calendar to the calendar on the BlackBerry smartphone but any calendar operations performed on the BlackBerry smartphone do not synchronize to the Microsoft Outlook calendar.

Verify that all BlackBerry Enterprise Server services are running under the appropriate BlackBerry Enterprise Server service account.


(1) Several BlackBerry Enterprise Server services run under the Local System account (for example, the BlackBerry Attachment Service or the BlackBerry Mobile Data System Services - Apache Tomcatxxx8482; Service).

(2)Confirm the BlackBerry Enterprise Server service account has the appropriate permissions

(3)Verify the Collaboration Data Object (CDO) is present and supported with the Microsoft Exchange environment

(4)Confirm the BlackBerry Enterprise Server service account is not a Domain Administrator