Error message- syning with Outlook calendar

I frequently get the error message pop up “Unable to sync (user name) Outlook calendar” Possibly because I do not use the Outlook Calendar.

I just click on ignore but is there any way to stop eM client trying to carry out a sync?
I am using V6


You can go to Tools>Accounts and uncheck the “CalDAV” checkbox in your Outlook account settings. This will disable the Calendar for that account and should no longer present errors.