If you recently created a new Outlook Profile in Outlook 2016 for Mac, or a new Identity in Outlook for Mac 2011, added a new account, or if you recently imported new data from a source such as a PST or OLM file, Spotlight indexing may not be complete. For more information about how to get and run the utility, go to the Mac Outlook Support Utilities blog on the Microsoft TechNet website. To resolve this issue, follow these steps: The Microsoft User Data folder is not located under the ~/Documents folder. The Identity or one of its parent folders are added to the Privacy tab in Spotlight. The Identity name contains special characters such as the slash mark (/). The Outlook 15 Profiles folder is not located under ~/Library/Group Containers/UBF8T346G9.Office/Outlook. The Profile or one of its parent folders are added to the Privacy tab in Spotlight. The Profile name contains special characters such as the slash mark (/). This issue may occur for one of the following reasons: Additionally, when you search for mail items by using the Mac OS native Spotlight Search, your search is unsuccessful. In Microsoft Outlook 2016 for Mac or Office for Mac 2011, you receive a 'No Results' message when you try to search for an email message or apply a filter to a folder, and task items are not displayed in the Tasks folder. Outlook 2016 for Mac Outlook for Mac for Office 365 More.