User Configuration > Administrative Templates > Microsoft Office 2016 > Microsoft Save As PDF and XPS add-ins
User
HKCU\software\policies\microsoft\office\16.0\common\fixedformat
Allows enforcement of ISO 19005-1 compliance in PDF output. The values for his setting are as follows: Default: Options UI defaults to not ISO compliant. User may override. Encourage: Options UI defaults to ISO compliance. User may override. Prevent: Not ISO compliant. No user override. Enforce: ISO compliant. No user override. See Office Help for more details on the tradeoffs of choosing ISO 19005 compliance.