Files downloaded from the Internet must be opened in Protected view in PowerPoint.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223385	O365-PT-000009	SV-223385r508019_rule		Medium

Description
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.

STIG	Date
Microsoft Office 365 ProPlus Security Technical Implementation Guide	2020-09-11

Details

Check Text ( C-25058r442374_chk )
Verify 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" is set to "Disabled". Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\16.0\PowerPoint\security\protectedview If the value DisableInternetFilesInPV is REG_DWORD = 0, this is not a finding.

Check Text ( C-25058r442374_chk )

Verify 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" is set to "Disabled".

Use the Windows Registry Editor to navigate to the following key:

HKCU\Software\Policies\Microsoft\Office\16.0\PowerPoint\security\protectedview

If the value DisableInternetFilesInPV is REG_DWORD = 0, this is not a finding.

Fix Text (F-25046r442375_fix)
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".