Why do Modified outlook meetings get canceled?

Hello Mitchell,

Glad to hear you again. From the private message, we can see you had run the MRCA Autodiscover testing, can you please tell us the test result: Successfully or Failed?

Meanwhile, from your screenshot, we can see the status shows Presence Unknow which is abnormal. I suppose the cause is you don't use the Skype for Business as your instant messaging program. For confirm it, can I know if your colleagues who have the same domain with you also have the same phenomenon (a green question mark) please? If so, this phenomenon may not help to troubleshoot this issue.

Regards,

Rudy

yes, I just got back to work and will look at it. sorry, unable to send messages during the weekend to help debug.

Hello Mitchell,

Have you referred to my private message? We appreciate your time.

Regards,

Rudy

Hello Mitchell,

Thanks for your information. As you mentioned if you don't respond to that new invitation, the same name doesn't appear. In this situation, whether you can normally join that meeting?

Meanwhile, It is a good point that we need to know why you will get a new invitation even though you had responded this meeting before. Let's go on.

1. Please check if the "Delete invitations and response that have been updated" option have been checked on OWA > Settings > Calendar > Automatic processing > Invitations. Note: this option is checked by default.
2. Please refer to this article to enable logging in Outlook for Mac on you and the meeting organizer side, and then send us the logs for us to check it. We'd like to collect the logs via private message for privacy concern.

Regards,

Rudy

No, the second name does not appear until I respond to the email asking me if I want to accept the modification to the calendar meeting invite. It is confusing to me why I am even getting that email that a person was added to the calendar invite when no one else gets that invite.