Invite Attendees wont accept email address with o'apostrophe
When inviting attendees to new event, Outlook Calendar now won't accept email address with apostrophe eg in format "firstname.lastname@example.org" (generates error box "One or more attendees have invalid email addresses"), even though same email address is used to send emails and even forward received calendar events. This is a new development. Outlook used to let me invite to this (same) address - now just get error - is there any setting in Outlook Calendar to fix this incorrect error/block ??