O365-EX-000034 - File attachments from Outlook must be opened in Excel in Protected mode.

Information

This policy setting allows you to determine if Excel files in Outlook attachments open in Protected View.

If you enable this policy setting, Outlook attachments do not open in Protected View.

If you disable or do not configure this policy setting, Outlook attachments open in Protected View.

Solution

Set policy value for User Configuration >> Administrative Templates >> Microsoft Excel 2016 >> Excel Options >> Security >> Trust Center >> Protected View >> Turn off Protected View for attachments opened from Outlook to 'Disabled'.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Office_365_ProPlus_V3R1_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-18(4), CAT|II, CCI|CCI-001170, Rule-ID|SV-223343r961092_rule, STIG-ID|O365-EX-000034, STIG-Legacy|SV-108865, STIG-Legacy|V-99761, Vuln-ID|V-223343

Plugin: Windows

Control ID: 9c0d4676b844a336a0236386309a4336bdc4b67254daf82ac66c78abb2f64d10