Open the Office folder, and then double-click Microsoft Database Utility.app. Note You can also browse to the Database Utility by opening the Application folder and then opening the Microsoft Office 2011 folder. Hold down the Option key on the keyboard, and then start Outlook 2011.Note This backup can be used by third-party database recovery software, which generally work better on non-rebuilt identities. You have created a backup of your identity (or identities) and are ready to continue. Control-click or right-click the Office 2011 identities folder, and then select Duplicate.To back up your identity, follow these steps: Step 3: Discover and b ack up the current identity When you add and delete messages, appointments, tasks, and notes, the database can develop wasted space. When you create an Outlook identity, hard disk space is allocated for the data that the identity receives as you work. On the File menu, click Get Info, and then click Get Information.Open the Office 2011 Identities folder.In the Finder, click Go, and then click Home.To determine the size of your identity, follow these steps: For example, if the identity is 1 gigabyte (GB), there should be at least 3 GB of free space available on the hard disk (not including the space that is needed for virtual memory). Step 2: Determine the amount of space available on the hard diskīefore you perform any database maintenance, make sure that you have at least three times as much hard disk space available as the current size of your Outlook identity. When you are finished, click the red close button in the upper-left corner to close the window. Click Force Quit to quit the application. Select the application in the Force Quit Application window, and then select Force Quit. If you cannot quit an application or do not know how, hold down the Command and Option keys, and then press Esc on your keyboard. To quit an application, click the menu on the toolbar (top), and then select Quit. You must quit all applications before you continue with the following steps.

It is recommended to create a new profile. Office 2016 for Mac no longer includes the ability to rebuild or repair profiles.