Blackberry losing calendar appointments from Outlook 2010

We have a couple users at our agency that seem to be randomly losing their calendar appointments on their Blackberry's from their Outlook. We are running BES 5.0.2.29

In order for me to fix this temporarily and resync the calendar events, I can turn off wireless sync and then turn it back on and the calendar events will come back. I would like to not have to do this as it is a inconvenience for our users which are physicians and they need their calendars on the go.

What could be causing this and how can we fix this?

All the users that are having an issue are running Blackberry Bold's 9930's on Verizon and also are running the latest software for the phone.

Its seem to be a know issue with Exchange. We have the same issue at work with BB devices (BES and BIS) and devices using Active Sync.

We have a case open with M$.

Originally Posted by froussy

Its seem to be a know issue with Exchange. We have the same issue at work with BB devices (BES and BIS) and devices using Active Sync.

We have a case open with M$.

Thank you for your response. How would I open a ticket with Microsoft?

We don't have this issue with BES-X and Exchange 2010...