Prevent indexing Microsoft Office Outlook

Enable this policy to prevent indexing of any Microsoft Outlook items. The default is to automatically index Outlook items. If this policy is enabled then the user's Outlook items will not be added to the index and the user will not see them in search results.

Supported on: Microsoft Windows Vista, or any version of Windows with Windows Search 3.01 or later
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSOFTWARE\Policies\Microsoft\Windows\Windows Search
Value NamePreventIndexingOutlook
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

search.admx

Administrative Templates (Computers)

Administrative Templates (Users)