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Outlook on the web (formerly Outlook Web App and Outlook Web Access [2]) is a personal information manager web app from Microsoft. It is a web-based version of Microsoft Outlook, and is included in Exchange Server and Exchange Online (a component of Microsoft 365 .)
Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems. The first version was called Exchange Server 4.0, to position it as the successor to the related Microsoft Mail 3.5.
OWA once applied exclusively to the online version of Outlook which came with Microsoft Exchange Server. These days, Outlook on the web is more commonly accessed from a Microsoft 365 or free Outlook.
A global wave of cyberattacks and data breaches began in January 2021 after four zero-day exploits were discovered in on-premises Microsoft Exchange Servers, giving attackers full access to user emails and passwords on affected servers, administrator privileges on the server, and access to connected devices on the same network. Attackers typically install a backdoor that allows the attacker ...
Fix problems with third-party mail applications. If you're having problems accessing AOL Mail through third-party applications, such as Outlook or Thunderbird, try troubleshooting with these suggestions to make sure your email works where and when you need it.
Learn how to download the server settings through IMAP and additional info to help you download your email.
Outlook on the web, formerly Outlook Web App, a web version of Microsoft Outlook, included in Microsoft 365, Exchange Server, and Exchange Online (domain outlook.office365.com) Outlook for Windows, a new, free Outlook application that is preloaded with Windows 11 from 2024. Outlook Mobile, a mobile app version of Outlook.
Exchange Server 5.0 introduced a number of other new features including a new version of Outlook Web Access with calendar support, support for IMAP4 and LDAP v3 clients and the Deleted Item Recovery feature.