Outlook must be configured not to prompt users to choose security settings if default settings fail.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-26635	DTOO315	SV-54063r1_rule		Medium

Description
This policy prompts the user to choose security settings if default settings fail, but allowing users to select their own security settings would result in inconsistent enforcement in the organization and the likelihood of nonsecure settings being applied.

STIG	Date
Microsoft Outlook 2013 STIG	2018-09-05

Details

Check Text ( C-48003r1_chk )
Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Security "Prompt user to choose security settings if default settings fail" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\outlook\security Criteria: If the value ForceDefaultProfile is REG_DWORD = 0, this is not a finding.

Check Text ( C-48003r1_chk )

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Security "Prompt user to choose security settings if default settings fail" is set to "Disabled".

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

HKCU\Software\Policies\Microsoft\Office\15.0\outlook\security

Criteria: If the value ForceDefaultProfile is REG_DWORD = 0, this is not a finding.

Fix Text (F-46943r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Security "Prompt user to choose security settings if default settings fail" to "Disabled".