Fails to add an attendee into a single instance of a recurring meeting
Exchange 2010 with Evolotion 3.32.1-2 (Ubuntu 19.04)
I create a recurring calendar ever, invite attendees and save. Then a day later i tried to edit the series and add more attendees and saving the event. This is the error I get:
Cannot modify calendar object: The send or update operation could not be performed because the change key passed in the request does not match the current change key for the item.
Edited by Milan Crha