Using Office 365 on Calendar OSX app

Hi,

I m having problems using the Calendar native OSX app to access my Office 365 calendar.

I have configured the Exchange account several times in the computer (OSX 10.9.2) and the mail app work fine, but not the calendar app. It downloads all existing meetings and show them in the calendar, but if you want to create, edit or delete any meeting, you get an error message saying "Calendar can't save the event "xxxx" in the Exchange Server."

I am using the Offce 365 algo on Outlook for Mac and it works fine, and also on some IOS devices and everything work fine.

Please help me.

Regards,

Eduardo