Calendar invites are disappearing from Outlook

[gseiger]

I have a user that when he creates an invite in Zoom and sends it out it to others it gets systematically wiped out from Outlook once accepted???  Does anyone have any ideas? 

[SuperITGuy]

Try unchecking the Shared Calendar Improvements checkbox in the account settings.  

1. In Outlook, select File >Account Settings >Account Settings.  You will see a list of your email accounts.

2. Select the Microsoft Exchange account that you use to manage someone else's calendar and choose Change.... 

3. Choose More Settings, followed by the Advanced tab.

4. Select the checkbox next to: Turn on shared calendar improvements.