Users are intermittently receiving a "no permission" error when trying to send new messages as shared mailboxes. The issue affects at least two shared mailboxes and started recently,…
I'm new to posting but have been following discussions for a while. I need help with a client's setup for an Exchange Hybrid arrangement with Microsoft 365. I've…
I've got a headscratch of a problem with Outlook classic: users on Exchange Online can't see calendar items belonging to our on-premise users, even though they can access…