Do not regenerate meetings

By default, when a user accepts or tentatively accepts a meeting, Outlook creates a duplicate copy of the meeting with the new response status and a new entry ID. Outlook then deletes the old version of the meeting from the calendar. This setting allows you to roll back to the legacy behavior and prevent meeting regeneration.

Supported on: At least Windows 7

Registry Pathsoftware\policies\microsoft\office\16.0\outlook\options\calendar
Value Namedisablemeetingregeneration
Enabled Value1
Disabled Value0


Administrative Templates (Computers)

Administrative Templates (Users)