Hi all, I am not really familiar with Exchange however we are facing a kind of issue 

the issue is  "user A" send and appointment to a large group

"User A" left the company but now all the user in the group still have the appointment on their calendars

is there a way for exchange administrator to delete that appointment on all the calendar?

at this point the only suggestion was to delete the series on each user calendar but as I say it is a Large group.

any comment?

thanks and Regards.

Hello

tip: get-Get-Mailbox -ResultSize Unlimited | search-mailbox -searchquery {Kind:"meetings" AND Subject:"testmeeting"} -targetmailbox administrator -TargetFolder "SearchData" -loglevel full DeleteContent

try before use :)

Thanks I will try, let you know if it works

Hi,

The command above can only delete the meeting request which is send by UserA. But it can't delete the calendar items which are existed in Calendar.

If the user has been removed from Exchange, I suggest we can reconnect it and give mailbox full access permission to other user (administrator). Then the user who has full access permission to this mailbox can open UserA's mailbox in OWA or Outlook, and cancel the meeting, send updates to other attendees for all meetings.

Here is a similar thread for your reference:

https://social.technet.microsoft.com/Forums/exchange/en-US/5f9c5c14-bbf5-4375-aaca-26bc4ee634ee/user-gone-and-account-deleted-but-recurring-appointment-still-shows?forum=exchangesvradminlegacy

Regards,