I am using Outlook 2010 and a colleague with whom I regularly exchange meeting requests is using 2007, with the “request reply” option checked for meeting requests. Recently, my Outlook has stopped generating replies when I accept a meeting request. The meeting is added to my calendar, but when I click Accept, the only thing that happens is that the window closes. There is no reply in the outbox, and the colleague never receives a reply.
(We are not using Exchange.)
Fafner