Microsoft has launched High Volume Email for Exchange Online in public preview, with free access until May 2026 for ...

Microsoft confirms Exchange Online error misclassifying legitimate emails as phishing threats.

Microsoft says an Exchange Online issue that mistakenly quarantined legitimate emails last week was triggered by faulty heuristic detection rules designed to block credential phishing campaigns.

Missing emails? Exchange Online is tagging legitimate messages as spam - here's what to do ...

Microsoft confirms Exchange Online and Teams messages were mistakenly quarantined due to a phishing detection bug (EX1227432) ...

Microsoft users kicking off their work week may have been unable to access certain services, including emails, on Monday. Microsoft 365 Status said on X that it was investigating an issue “impacting ...

Microsoft is investigating ongoing Microsoft 365 issues preventing some Exchange Online customers from accessing their mailboxes. "We've identified an issue affecting Exchange Online connectivity for ...

Microsoft has confirmed that a faulty anti-phishing detection rule designed to stop credential theft campaigns mistakenly ...

Microsoft first tweeted at 8:56 a.m. Pacific Wednesday about the issue. The company said it was resolved hours later. Some users of Microsoft Exchange Online are unable to access mailboxes through any ...

Microsoft's cross-platform Exchange Web Services (EWS) API will end on October 1, 2026. This change will affect Exchange Online customers utilizing EWS to access emails and contacts. EWS users who ...

Microsoft is set to retire Exchange Web Services (EWS) on October 1, 2026, after which it will WS requests from non-Microsoft apps to Exchange Online. The change won't impact EWS in Exchange Server, ...

Microsoft Corp. has been ramping up its cloud-based Exchange Online offering for its largest customers -- even though that may mean cannibalizing its own on-premises Exchange Server installed base.