Information
Files downloaded from the Internet must be opened in Protected view in PowerPoint.
GROUP ID: V-223385
RULE ID: SV-223385r961086
This policy setting allows you to determine if files downloaded from the Internet zone open in Protected View. If you enable this policy setting, files downloaded from the Internet zone do not open in Protected View. If you disable or do not configure this policy setting, files downloaded from the Internet zone open in Protected View.
Solution
Set the policy value for
User Configuration >> Administrative Templates >> Microsoft PowerPoint 2016 >> PowerPoint Options >> Security >> Trust Center >> Protected View 'Do not open files from the Internet zone in Protected View'
to 'Disabled'.