If you search for items in Microsoft Office Outlook 2007 and do not receive the results that you expect, the indexing of your Microsoft Windows and Microsoft Office system data files (the search catalog) may not be complete.

You can rebuild the search catalog, which restarts the indexing of your data files. To rebuild your search catalog, do the following:

1. Exit Outlook.
2. Click the Start button, and then click Control Panel.
3. Do one of the following:
• Windows Vista     Click System Maintenance, and then click Indexing Options.
  if you are in Classic view, double-click Indexing Options.

• Microsoft Windows XP     Under See Also, click Other Control Panel Options, and then click Indexing Options.
  if you are in Classic view, double-click Indexing Options.

4. Click Modify, select the check boxes for the locations you want to index, and then click OK.
5. Click Advanced.
6. Click Rebuild.
7. Restart Outlook.