It also stores settings of the Outlook window size and position. Why use it: This utility resets customizations you've made to Outlook from the Outlook menu > Preferences. OutlookResetPreferences: This utility will reset all Outlook Preferences back to defaults. Why use it: Search results within Outlook show nothing or return older items only such as when you are looking for an email you know you have and might already be looking at it but it doesn't show up in the search result. OutlookSearchRepair: This utility will repair search results for Microsoft Outlook. Microsoft has released some useful utilities for Mac Outlook 2016.