The message is: "To use the database, you must rebuild it using the Database Utility.

The Office database stores your personal information, such as the Scrapbook and Outlook messages and contacts. To continue, click Rebuild. After the rebuilding process is complete, close the Database Utility. Then the database will be available for your Office application".  

It asks me to rebuild several times a day.  When I rebuild, I can access Outlook  but then it crashes again. How can I rebuild once and for all without this happening repeatedly?