If the steps above for Calendar_Appointments_And_Or_Address_Book_Not_Syncing doesn't correct Appointments/Address Book synchronization you'll want to rebuild ZCB.
e I have an issue where all in suddent, all blackberry devices won't sync anymore for calendar.
Type in the email field press and hold the ALT key and type CNFG. Once you enter this a hidden menu will appear and you need to change "Wireless Sync" to No f.Synchronization of calendar items originated from BB device to ZCS may take long time.Go back to the address book icon on the Black Berry and click on the menu, then options. Under Wireless Synchronization change NO back to YES then click save. I don't have much on hand experiences with Blackberry environment.
I use Exchange 2010 SP1 with Update Roll up 6 and Blackberry Enterprise Server Express for Microsoft Exchange Version 5.0.3 (Bundle 12). Make sure calender is set to “Synchronize Wireless” If it is set to sync then wipe the blackberry and re-sync it on the BES server.Black Berry contacts, calendar, tasks or memos stop syncing. Had to move BES to another box (XP) and now, no calendar!Talked to BB support and went through KB to insure proper rights on BESAdmin account, still nothing. Thanks I know this thread is over a year old, but if you google "blackberry not synching with Outlook calendar" you might end up here.I can see that my mails are getting synced; however my contacts and other items like calendar did not sync.