The error 17099 when occurs it stop users from receiving or sending the email messages and says to users that the email contains virus or malicious content. The error code 17099 is one of the common error that user faces while working with Mac Outlook. However, user can also encounter some errors while using the Mac Outlook 2011. The Outlook 2011 has been specifically developed for Mac users that has similar functionality of Outlook in Windows PC’s.Īlong with the email, journal, calender and setting appointments feature the Outlook 2011 also facilitate its users with many interesting features. MS Outlook is a fantastic data management tool and is widely used by both Mac and Windows users. Fixing Error Code 17099 In Ms Outlook For Mac 2016.