GoKawiilMicrosoft sets end-of-2029 retirement date for Internet Explorer Mode in Edge
Microsoft has reissued a reminder to enterprise IT admins that IE Mode, the legacy compatibility feature in Edge that runs sites using Internet Explorer's old Trident/MSHTML engine, will be discontinued by the end of 2029. The notice, sent via the Microsoft 365 admin center, reaffirms a 2021 commitment and asks organizations to begin planning now to migrate old applications away from IE dependencies.
GoKawiil's interpretation of the reporting above, not reported fact.
Many enterprises still rely on decades-old internal tools built for Internet Explorer, and this shutdown forces a long-overdue modernization push. Because such migrations can take years, Microsoft's early warning gives IT departments a runway to avoid being caught with broken legacy systems once support ends.
- IE Mode in Microsoft Edge will lose support by the end of 2029.
- Microsoft will give at least one year's formal notice before final retirement.
- Organizations using legacy apps built on IE11's Trident/MSHTML engine should start migration planning now.
Source: techspot.com — Alfonso Maruccia, 2026-09-21
Published there as: “Internet Explorer is finally, truly dying, and Microsoft wants you ready by 2029”
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