I have bb8330 and running both 4.5 os, and 4.5 desktop.

I have had no problems until yesterday when all of a sudden the calendar will not sync up. Contact, memo, tasks are all still fine, but for some reason the calendar gets skipped???

I have reset device, and even reistalled desktop (at the suggestion of Verizon tech) to no avail.

I am stumped and i am no BB nebie???

Thoughts anyone???

Thanks in advance for your help...

Did you install the USB drivers?
I would also try 4.6 or 4.7 or go lower like 4.3

I assume you are using Outlook? What version?

Outlook 2003, and everything worked fine for weeks. then yetserday, no calendar sync???

its driving me crazy.

do you think that outlook has a setting chaged?