My company uses Domino/Notes, and a client company uses Exchange/Outlook. The other company has been able to accept calendar invites without any issues up until a few weeks ago, and now according to the client, the format of the invite has changed and the accept button is no longer usable (it’s grayed out) from a computer or from a blackberry. I made no changes to the Domino server except the DST update to Windows. Any ideas as to what happened and if it is on my end or theirs?