![]() Some older browsers may support TLS 1.2 but may require that a setting be activated to enable its use. Current versions of the major browsers have TLS 1.2 enabled by default. When accessing Office 365 through a web browser, the browser’s TLS is used. Outlook 2013 for Windows issued an update in 2015 to add TLS 1.2 support. Updating to Outlook 2016 is recommended. ![]() ![]() Most Windows 7 computers need to have a Recommended Update applied, as do Windows Server 20 (see below for information about updating Windows 7 and Windows Server).Ĭurrent email applications such as Outlook 2016 and Apple Mail make use of their operating system’s TLS handling, and no changes are needed. Windows 10, Server 2016, and macOS have TLS 1.2 enabled by default. When Office 365 disables support for TLS 1.0 and 1.1, all apps and servers that interact with it must use TLS 1.2 or later versions to be able to connect without issues to Office 365 services. Please see the details below regarding older operating systems and browsers. TLS (Transport Layer Security) provides communications security over computer networks and so affects email, instant messaging, and other networked communication interactions. Windows 10, Server 2016, MacOS, and current versions of the major browsers have TLS 1.2 enabled by default. As previously announced, beginning October 31, 2018, Microsoft will enforce use of TLS 1.2 with Office 365.
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