Title

Outlook must be configured not to prompt users to choose security settings if default settings fail. (Cat II impact)

Discussion

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.

Check Content

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

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".

Additional Identifiers

Rule ID: SV-54063r1_rule

Vulnerability ID: V-26635

Group Title: DTOO315 - Outlook Security settings

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.