Information
Word attachments opened from Outlook must be in Protected View.
GROUP ID: V-223405
RULE ID: SV-223405r961086
This policy setting allows you to determine if Word files in Outlook attachments open in Protected View.
If you enable this policy setting, Outlook attachments do not open in Protected View.
If you disable or do not configure this policy setting, Outlook attachments open in Protected View.
Solution
Set policy value for
User Configuration >> Administrative Templates >> Microsoft Word 2016 >> Word Options >> Security>> Trust Center>> Protected View >> Turn off Protected View for attachments opened from Outlook
to 'Disabled'.