← Back to Microsoft Office 365 ProPlus Security Technical Implementation Guide

V-223339

CAT II (Medium)

Untrusted database files must be opened in Excel in Protected View mode.

Rule ID

SV-223339r961086_rule

STIG

Microsoft Office 365 ProPlus Security Technical Implementation Guide

Version

V3R5

CCIs

CCI-001662

Discussion

This policy setting controls whether database files (.dbf) opened from an untrusted location are always opened in Protected View. If you enable this policy setting, database files opened from an untrusted location are always opened in Protected View. Users will not be able to change this setting under File >> Options >> Trust Center >> Trust Center Settings >> Protected View. If you disable or do not configure this policy setting, database files opened from an untrusted location are not opened in Protected View, unless users have changed this setting in the Trust Center. Note: This policy setting only applies to subscription versions of Office, such as Office 365 ProPlus.

Check Content

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Excel Options >> Security >> Trust Center >> Protected View >> Always open untrusted database files in Protected View is set to "Enabled".

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

HKCU\software\policies\microsoft\office\16.0\excel\security\protectedview

If the value for enabledatabasefileprotectedview is REG_DWORD = 1, this is not a finding.

Fix Text

Set policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Excel Options >> Security >> Trust Center >> Protected View >> Always open untrusted database files in Protected View to "Enabled".