User Configuration > Administrative Templates > Microsoft Project 2016 > Project Options > Edit > Edit options for Microsoft Project
User
HKCU\software\policies\microsoft\office\16.0\ms project\options\edit
Prompts the user to update linked objects whenever they open a file containing OLE links, if the source has changed. If you enable this setting, users are prompted to update linked objects whose source has changed whenever they open a file containing OLE links. If you disable or do not configure this setting, the user's default setting is used.