Allow users to demote attachments to Level 2


This policy setting controls whether Outlook users can demote attachments to Level 2 by using a registry key which will allow them to save files to disk and open them from that location. Outlook uses two levels of security to restrict access to files attached to e-mail messages or other items. Files with specific extensions can be categorized as Level 1 (users cannot view the file) or Level 2 (users can open the file after saving it to disk). Users can freely open files of types that are not categorized as Level 1 or Level 2. If you enable this policy setting users can create a list of Level 1 file types to demote to Level 2 by adding the file types to the following registry key: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Security\Level1Remove. If you disable or do not configure this policy setting users cannot demote level 1 attachments to level 2 and the HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Security\Level1Remove registry key has no effect.


Policy Path: Microsoft Outlook 2016\Security\Security Form Settings\Attachment Security
Policy Setting Name: Allow users to demote attachments to Level 2

See Also

Item Details


References: 800-53|CM-6b.

Plugin: Windows

Control ID: a28ce89f54ffab63925095f7221ff0e5253d1b3727b16ab67181c2dec5ee16ae