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 ...

Outlook 2010-2016 allows you to add multiple Exchange accounts (from the same Exchange server / domain) to a single Outlook Profile. MS has a KB article that says this is unsupported and can cause ...

“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 ...

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 ...

The inability to connect from a Vista PC to an Exchange Server may be due to a conflict with the Windows Firewall. Dennis O'Reilly began writing about workplace technology as an editor for Ziff-Davis' ...