Rebuild the search index in Microsoft Outlook

If Outlook is not searching all of your email correctly, you can rebuild the Outlook search index to fix this:

1. Click on File, then Options
2. Select Search on the left, then click Indexing Options
   
3. Click Advanced
   
4. Click the Rebuild button
   

This will cause Outlook to rebuild its entire search index. This can take a long time to complete, but you can continue to use Outlook, and it will do this in the background.