Open the Office folder, and double-click on Microsoft Database Utility software. You might also open Application folder and after it MS Office 2011 to locate the utility.
In order to fix Error Code 17099 you are require a Microsoft Database Utility to reconstruct the identity database.
How to Fix Error Code 17099 Outlook For Mac Manually?
Once the Error Code 17099 in MS Outlook appears on the system then you will not be able to send or receive email and affirms that the email contains spam content or infected data.