Files dragged from an Outlook e-mail to the file system must be created in ANSI format.

This policy setting controls whether e-mail messages dragged from Outlook to the file system are saved in Unicode or ANSI format.

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Outlook Options >> Other >> Advanced >> Use Unicode format when dragging e-mail message to file system is set to "Disabled".

Use the Windows Registry to navigate to the following key:

HKCU\software\policies\microsoft\office\16.0\outlook\options\general

If the value for msgformat is set to REG_DWORD = 0, this is not a finding.

Set the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Outlook Options >> Other >> Advanced >> Use Unicode format when dragging e-mail message to file system to "Disabled".