When you select a different form region of an Outlook Add-in in Outlook 2016, Outlook 2016 crashes. Additionally, the following application error is logged in the event log:
Event ID: 1000Application Name: OUTLOOK.EXEApplication Version: 16.0.7766.2060Fault Module Name: OUTLOOK.EXEFault Module Version: 16.0.7766.2060Exception Offset: 0088adea
Note The version and offset information may vary.
This issue occurs because of an access violation that occurs when Outlook 2016 tries to access a control that is not initialized.
Microsoft is researching this problem and will post more information in this article when the information becomes available.