https://support.microsoft.com/en-au/topic/may-1-2018-update-for-office-2016-kb4018318-9667eba0-ba88-a4c9-b331-58d2a6793874
May 1, 2018, update for Office 2016 (KB4018318) - Microsoft Support
Provides information about the Office 2016 update 4018318 that was released on May 1, 2018.
for officemayupdatemicrosoftsupport