User Configuration > Administrative Templates > Microsoft Word 2016 > Word Options > Security
User
HKCU\software\policies\microsoft\office\16.0\word\security
This policy controls the default IRM protection setting when exporting Word documents to XPS files. Enabling this policy setting will turn off IRM protection when exporting to XPS, if not explicitly set by users through the Export Options dialog. If you disable or don't configure this policy setting, the default IRM protection setting for XPS export is based on previous IRM export selection.