My iPhone calendar stopped syncing with my Outlook calendar

Question

I've tried resetting sync history, checking the calendar box for "replace information on this iPhone", deleting and reinstalling mail account, rebooting both the iPhone and PC. Help??

Answer 1

My iPhone 3G and Outlook sucessfully synched everything (contacts, calendar, mail accounts, bookmarks, notes) until V 3.0 of the phone software. Then calendar would not synch no matter what. After a couple of hours on the phone with an Apple rep we discovered that when a new user account was set-up in Windows (XP SP 3), and a new instance of Outlook (Office 2003) was opened in that account the Calendar in the new account would sync. However, when the calendar from the old account was imported into the new account (via .pst export / import), it still wouldn't sync. At that point the Apple rep had no more help to offer. After much offline troubleshooting on my own I found a solution that at least worked for me by the following steps:
1) create a new mail account through: Control Panel | Category View | User Accounts | Mail (Add a new account, don't copy the old one)
2) don't know whether this step is necessary, but since the "old" .pst file was 1997-02, I exported / imported it into a 2003 Personal Folders .pst file, and then replaced the .pst file on the "new" mail account with the "updated" .pst file from the "old" mail account.
3) opened the new mail account and exported all Calendar appointments into an Excel file
4) in Calendar view of Outlook selected: View | Arrange By | Current View | By Category, then did an Edit | Select All and deleted all appointments.
5) then using File | Import / Export, imported the Excel file of appointments into Calendar,
6) open iTunes, select Preferences | Devices and Reset Synch History
7) under Info select only the Calendar Sync option and the option to replace the Calendar information on the phone with the new Calendar.
The calendar now properly updates (several regualr updates have since been tried). One small annoyance (but preferable to not syncing) the recurring aspect of any appointment (not the appointment itself) is lost, along with any color formatting, but those are easily fixed up afterward.