Prevent users from customizing attachment security settings

This policy setting prevents users from overriding the set of attachments blocked by Outlook.

If you enable this policy setting users will be prevented from overriding the set of attachments blocked by Outlook. Outlook also checks the "Level1Remove" registry key when this setting is specified.

If you disable or do not configure this policy setting, users will be allowed to override the set of attachments blocked by Outlook.

Supported on: At least Windows 7
Registry HiveHKEY_CURRENT_USER
Registry Pathsoftware\policies\microsoft\office\16.0\outlook
Value Namedisallowattachmentcustomization
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

outlk16.admx

Administrative Templates (Computers)

Administrative Templates (Users)