Microsoft sets new support deadlines for IE11 and Edge

Microsoft on Monday set dates for nudging Internet Explorer (IE) toward the grave and for ending security support of the original circa-2015 Edge browser.

Neither announcement was unexpected. Microsoft reduced IE – notably the final edition, IE11 – to second-rate status more than four years ago, when it halted development of the browser. And once the Redmond, Wash. developer released a stable, production-grade version of its reworked Edge, the one built with technologies from the Google-dominated Chromium open-source project, it was only a matter of time before the company axed the legacy Edge.

The earlier version debuted alongside Windows 10 in July 2015.

Although Microsoft bundled the announcements into a single post to a company-run blog, each end-of-support decision – one regarding IE11, the other the 2015 Edge – was aimed at separate, if sometimes overlapping, constituencies.
One year to IE11's 'degraded experience' with Microsoft 365

Ironically, the hammer will fall lightest on IE11: Only the browser's ability to connect with Microsoft 365 applications and services will be affected by the impending deadlines.

Here's what will happen and when.
The Teams web app will stop supporting IE11 starting Nov. 30.
All remaining Microsoft 365 apps and services will no longer support IE11 beginning Aug. 17, 2021.

(Microsoft is using Microsoft 365 as a generic label; the same deadlines will obviously hold for the apps and services provided by Office 365, the older and less expensive software subscription.)