Policy
Turn off Protected View for attachments opened from Outlook
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.
PackMicrosoft Office
CategoryMicrosoft Excel 2016 / Excel Options / Security / Trust Center / Protected View
Policy ID
062498b45dacInternal name
L_TurnOffProtectedViewForAttachmentsOpenedFromOutlookRegistry
Copy registry mappings
HKCU\software\policies\microsoft\office\16.0\excel\security\protectedview\disableattachmentsinpv (enabled) = 1
HKCU\software\policies\microsoft\office\16.0\excel\security\protectedview\disableattachmentsinpv (disabled) = 0Policy notes
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.
Related policies
Always open untrusted database files in Protected ViewAlways open untrusted text-based files in Protected ViewDo not open files from the internet zone in Protected ViewDo not open files in unsafe locations in Protected ViewOpen files on local Intranet UNC in Protected ViewSet document behavior if file validation fails