Microsoft is investigating an ongoing outage impacting Microsoft 365 services after customers have reported experiencing issues while trying to sign into, access, and receive emails on the outlook.com ...

A design issue in the Microsoft Exchange Autodiscover feature can cause Outlook and other third-party Exchange client applications to leak plaintext Windows domain credentials to external servers.

Microsoft next week plans to disclose more details of a forthcoming update to its Exchange Server communications software, including new features for the Outlook e-mail program. Paul Flessner, a ...

Microsoft is investigating an ongoing Exchange Online outage preventing customers from sending emails and triggering 503 errors on affected systems. Impacted users report having issues with emails ...

“Owowa” stealthily lurks on IIS servers, waiting to harvest successful logins when an Outlook Web Access (OWA) authentication request is made. Researchers have uncovered a previously unknown malicious ...

Microsoft is pausing the rollout of an Exchange security update after it became clear that the patch could break transport ...

Some Office users are unable to access Outlook on their computer. When trying to do the same, the following error message pops up out of nowhere and they want to know ...