I am having exactly the same problem with my PDA since upgrading to Outlook
2003. Contacts, notes, files all sync without problems but the calendar will
not sync because it says it's in use by another application, even though
there are no other applications open. Hope someone can help fix this because
it's really frustrating.

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Sara
> I suddenly cannot change any existing information in my calendar or add new
> appts. I can only delete items. When I try to add new appts. nothing
> happens. When I try to change existing appts, I get an error message saying
> the item may not have been deleted correctly. The calendar also is not
> synching to my PDA, but email and contact info is.
Milly Staples [MVP - Outlook] - 23 Sep 2006 18:45 GMT
Contact the makers of your synching program or use the microsoft.public.pocketpc.activesync news group if it is Activesync. Synching is handled by that software, not Outlook.

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Milly Staples [MVP - Outlook]
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After furious head scratching, Sara asked:
| I am having exactly the same problem with my PDA since upgrading to
| Outlook 2003. Contacts, notes, files all sync without problems but
[quoted text clipped - 8 lines]
|| correctly. The calendar also is not synching to my PDA, but email
|| and contact info is.