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 investigating an ongoing outage preventing Outlook on the web users from accessing their Exchange Online mailboxes. According to thousands of user reports on DownDetector, the issue ...

Last month, another outage blocked Exchange Online customers worldwide from accessing their mailboxes and sending or receiving emails. Yesterday, Microsoft addressed more Microsoft 365 issues ...

Microsoft on Thursday announced a public preview of Role-Based Access Control (RBAC) for Applications in Exchange Online.. RBAC for Applications in Exchange Online allows IT pros to set permission ...

Microsoft's Exchange team is warning Exchange Online users that many of its customers are being targeted by password spray attacks using its basic authentication. The warning comes as Microsoft ...