Turn off Protected View for attachments opened from Outlook

Supported on: At least Windows Server 2008 R2 or Windows 7

Registry

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

Value name: disableattachmentsinpv

Enabled: disableattachmentsinpv = 1

Disabled: disableattachmentsinpv = 0

Description

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.