We have a new issue - when a Delegate tries to convert a single occurrence in a series to a Teams meeting she gets a message telling her she must convert the entire series to a Teams meeting. (""This is one appointment in a series. To make it an online meeting, open the meeting series and try again.")
She does not want to change the entire series to a Teams meeting.
She states that she was able to do this until about a week ago. When opening a recurring meeting, she would get prompted and choose the single occurrence then proceed to add the Teams meeting to this single event only.
We are also in the process of moving users from Islands to Teams-only mode and I'm not sure if she was recently moved to TeamsOnly.
Same behavior as described in this locked & unanswered thread - except ours is a Win10 environment:
Any thoughts are appreciated.