1. In Windows, right-click Start, and then select Run. In the Open: box type regedit, and then click OK. This will open the registry editor.

  2. Find this subkey in the registry and then click it:

    • HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows

  3. Click Edit > New > Key and name the new key Windows Search.

  4. Select the new Windows Search key.

  5. Click Edit > New > DWORD Value.

  6. Type PreventIndexingOutlook for the name of the DWORD, and then press Enter.

  7. Right-click PreventIndexingOutlook, and then click Modify.

  8. In the Value data box, type 1 to enable the registry entry, and then click OK.

  9. Exit Registry Editor, and then restart Outlook.