Microsoft is ending support for Internet Explorer mode

Microsoft is ending support for Internet Explorer mode in Edge, though not immediately: the company says IE mode will remain supported through at least the end of 2029, and it is urging organizations that still rely on legacy IE-only apps to begin migrating now.

That reminder, reported by Mashable via gHacks Tech News, lands in the Microsoft 365 admin center under message ID MC1473151. For IT teams, it is less a sudden cutoff than a formal clock: the last way to run Internet Explorer’s rendering engine on modern Windows now has a publicly framed runway measured in years, not weeks.

If you grew up on the blue “e” logo, this belongs in the long goodbye of a browser era. For a wider look at how yesterday’s tech keeps reshaping today, browse our Nostalgia: Then & Now hub.

Key Takeaways

• Microsoft will support Internet Explorer mode in Edge through at least the end of 2029.
• IE mode is the only remaining way to run IE’s rendering engine on current versions of Windows.
• Microsoft says it will announce a final end-of-support date at least a year before it takes effect.
• Organizations still dependent on IE-only apps are being told to start migration planning now; those without IE dependencies need not take any action.
• Standalone Internet Explorer 11 was officially retired in June 2022, about 26 years after IE shipped with early Windows.

What exactly is Microsoft ending support for?

Microsoft is not yanking Edge itself. The notice targets Internet Explorer mode—a compatibility feature inside Edge that can load pages with Trident, the older engine that powered Internet Explorer 11.

Edge is built on Google’s open-source Chromium engine. IE mode exists so Chromium-based Edge can still open older internal tools and sites that only behave correctly under Trident. Mashable notes that this mode is now the last foothold for IE’s engine on modern Windows—and that foothold is on a retirement path.

Microsoft first flagged that eventual retirement in 2021, according to the same reporting. The new admin-center notice is the latest step in a wind-down that began years ago, not a brand-new surprise sprung overnight.

Why does a 2029 runway still matter for businesses?

Because migrations take years. Microsoft’s early warning is meant to give administrators time to rebuild or replace internal software that still depends on IE-only behavior. Waiting until a hard deadline appears on a calendar is exactly what the notice is trying to prevent.

The company has also committed to announcing an end-of-support date at least a year before it takes effect. In other words, “through at least 2029” is a floor for continued support, paired with a promise of advance notice before any final cutoff.

Microsoft’s practical guidance for companies that still depend on the feature is straightforward: identify what still needs IE mode, then update or replace it. Organizations with no IE dependencies do not need to take any action.

How does this fit the long goodbye of Internet Explorer?

Standalone Internet Explorer 11 was officially retired in June 2022. By then, Microsoft was already steering people who tried to open IE toward Edge. Most consumers had moved on earlier: by retirement, IE held less than 1 percent of the browser market, according to StatCounter data cited at the time.

That chronology is why this story feels like nostalgia and operations at once. The consumer browser that once defined Windows web life left the stage years ago. What remains is a compatibility bridge for organizations whose internal apps never finished the trip to modern web standards.

From shipping with early versions of Windows through a 26-year run, then a 2022 retirement, a 2021 warning on IE mode, and now a support commitment through at least 2029, the arc is clear: Internet Explorer’s engine is being retired in stages, with IT teams asked to plan while they still have time.

Who should care about microsoft ending support for IE mode?

Everyday Edge users who never touch decades-old internal tools can treat this as historical context. You are not being asked to install anything, flip a consumer setting, or mourn a browser you already abandoned.

The audience Microsoft is addressing is administrative: teams still responsible for applications that only work under Internet Explorer’s engine. For them, microsoft ending support for IE mode is a project-planning signal—identify dependencies first, then update or replace them, and do not assume the compatibility layer will exist forever.

That split—consumer nostalgia versus enterprise homework—is the real then-and-now beat. Then, Internet Explorer was the default doorway to the web for many Windows users. Now, its engine survives only as a mode inside a Chromium browser, with Microsoft publicly documenting that support will not last indefinitely.

The bottom line from the Mashable report remains simple. Microsoft is ending support for Internet Explorer mode on a multi-year timeline; support runs through at least the end of 2029; a final date will be announced with at least a year’s notice; and any organization still tied to IE-only applications should start moving now.