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Windows Search Email Indexer remains disabled in Outlook 2010 and Outlook 2013
Article ID: 2385524 - View products that this article applies to.
After you install Microsoft Outlook 2010 or Microsoft Outlook 2013, you may see the Windows Search Email Indexer add-in listed under Disabled Application Add-ins.
This behavior is by design. Windows Desktop Search installs a MAPI Protocol Handler. This handler is responsible for indexing data in earlier versions of Outlook. Outlook 2010 and Outlook 2013 now include some of that indexing and search functionality in the program. Because the new functionality is built into Outlook, the original Windows Search indexing components and addin are disabled in Outlook 2010 and Outlook 2013, but not removed. This ensures that earlier Outlook versions can be indexed correctly if Outlook 2010 or Outlook 2013 are uninstalled.
The disabled Windows Search Email Indexer addin can be safely ignored.
Windows Search is built into Windows Vista and Windows 7. Windows Desktop Search is available as a download for earlier Windows versions such as Windows XP and Windows Server 2003. Both download and built-in versions include the Windows Search Email Indexer addin.
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.