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.