Every time a user goes in to a calendar event (meeting) in outlook 2013 and removes an attendee from the list and saves it. The subject line adds the following "cancelled:" before the syntax in the subject line. I don't believe the meeting event is actually getting cancelled (its still on the calendar); but even just adding this simple, one-word syntax will cause mass confusion with the remainder of invitees scheduled. Anyone come across this? Any KB's, 2013 SP's, or reg fixes to kill the bug? Thanks.

Hi,

I understand that this issue is annoying and may cause mass confusion, but I can't reproduce this issue in my Outlook 2013 calendar.

In order to fix the issue more efficiently, I'd like to clarify the following questions:

Does this issue happen with all users or a certain one?

Is the user the organizer of the meeting?

Is the user set as delegate of other users?

How is the meeting showing in OWA? Can you reproduce it from there?

Regards,

Steve Fan
TechNet Community Support