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Categories: Microsoft 365 Apps

December 17, 2021

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Reminder: IE11 desktop application retires in 9 months on June 15, 2022 – Set up IE mode today (non-LTSC, non-Server)

From Microsoft Corporation
Technical Bulletin MC288052 · Published Sep 29, 2021 · Last updated Oct 7, 2021

Action required by Jun 15, 2022

Message Summary

Updated October 07, 2021: We have updated the content below for additional clarity.

As announced in MC257152 (May 2021), the future of Internet Explorer on Windows 10 is in Microsoft Edge. Internet Explorer mode (IE mode) provides legacy browser support within Microsoft Edge. Because of this, the IE11 desktop application will be retired on June 15, 2022. This means that the IE11 desktop application will no longer be supported and afterwards will redirect to Microsoft Edge if a user tries to access it.

With 9 months left before retirement, we highly recommend you start preparing today. The essential first step—Site Discovery—typically takes 3-4 weeks.

Internet Explorer 11 desktop application

  • Timing: The IE11 desktop application will be retired on June 15, 2022
    • Windows 10 LTSC and Server not affected. For a full list of what is in scope for retirement, see the FAQ.
  • Action:

How this will affect your organization:

If your organization has legacy sites and apps with IE dependencies, you will need to set up IE mode so that users can access them through Microsoft Edge. Microsoft Edge, with Internet Explorer mode, is the only browser with built-in compatibility for legacy IE-based sites and apps. It also gives your organization world-class compatibility with a dual engine advantage:

  • Microsoft Edge renders IE-based sites and apps using IE mode.
  • Microsoft Edge renders modern sites and apps using Chromium.

IE mode support follows the lifecycle of Windows Client, Server, and IoT releases at least through 2029. Additionally, Microsoft will give one year notice to deprecate the IE mode experience in-market when the time comes.

Note: After June 15, 2022, the IE11 desktop application will be disabled via Windows update. We do not recommend avoiding Windows updates to keep IE11 as Window updates contain critical operating system security patches.

What you need to do to prepare:

To prepare, we recommend setting up Microsoft Edge in your organization. If your organization needs legacy browser support, we recommend setting up IE mode in Microsoft Edge as soon as possible.

Additional Information

We always value feedback and questions from our customers. Please feel free to submit either feedback or questions via Message Center.

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TECHNICAL BULLETIN END

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ABOUT US: QuixTec, LLC is a U.S. certified Veteran Owned, modern DevOps organization and Microsoft Partner that specializes in Microsoft SharePoint, Office 365 expertise & HTML5 technologies for small to enterprise-sized organizations. The founder, Richard, has 30 years of experience working with several notable companies that include World Vision, Expedia, Microsoft, Levi Strauss, NASA, Boeing Aerospace, Los Alamos National Laboratory, and the U.S. Air Force, to name a few.  QuixTec is in the Seattle area. Phone today for a free consultation and project estimate:

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