Do not display reminders on Calendar items by default
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\16.0\outlook\preferences Value name: apptreminders
Enabled: apptreminders = 1
Disabled: apptreminders = 0
Description
By default, when users create Calendar items, the Reminder: check box in the item is set. By disabling this setting, you can change the default behavior so that the Reminder: check box is cleared by default .