Microsoft was not releasing feature updates for Exchange Web Services in Exchange Online and now says it will block EWS requests from non-Microsoft apps to Exchange Online starting Oct. 1, 2026.

Microsoft is getting serious about the end of Exchange Web Services (EWS) and has announced that, starting in March 2026, it will begin blocking EWS access to mailboxes without license rights.… EWS is ...

A newly discovered zero-day vulnerability in Microsoft Exchange Server has experts declaring an emergency and urging CSOs to think about the need to abandon on-premises email solutions. “Because it’s ...