User Configuration > Administrative Templates > Microsoft Office 2016 > Tools | AutoCorrect Options... (Excel, PowerPoint and Access) > Additional Actions
User
HKCU\software\policies\microsoft\office\common\smart tag
This policy setting allows you to configure the "Check for New Actions" menu option. If you enable this policy setting, and when a URL is specified, a new "Check for New Actions" menu option will be added to the "Additional Actions" context menu. If you disable or do not configure this policy setting, or when it is enabled and a URL is not specified, a "Check for New Actions" menu option will not be shown in the "Additional Actions" context menu.