DTOO238 - Outlook - Users customizing attachment security settings must be prevented.

Information

All installed trusted COM addins can be trusted. Exchange Settings for the addins still override if present and this option is selected

Solution

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security 'Prevent users from customizing attachment security settings' to 'Enabled'.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Outlook_2010_V1R14_STIG.zip