Box to End Support for IE9 and IE10

On September 26, Box, our vendor for BuckeyeBox, will discontinue support for Internet Explorer 9 and 10, including any version of compatibility mode that represents IE9 or IE10 in alignment with Microsoft's support cycle for these products. These browsers pose a security risk since they will no longer receive security updates.

As of January 12, 2016, Microsoft stopped supporting IE browsers 9 and 10 for the Windows operating systems that Box supports - Windows 7, Windows 8 (64-bit only) and Windows 10. Microsoft supports Internet Explorer 11 on Windows 7 and Windows 8 and Microsoft Edge on Windows 10.

All IE9 and IE10 users must upgrade to IE11 or an alternative supported browser in order to continue using Box after September 26. Failure to upgrade will result in an inability to access Box's web application with the latest updates.

Why is Box ending support for IE9 and IE10?

  • Microsoft has discontinued support for IE9 and IE10 on January 12, 2016 and will no longer release security updates making these browsers vulnerable to attacks. (e.g. IE 9 doesn't support policies such as Content Security Policy)
  • Maintaining backwards compatibility with much older technologies hinders the ability to innovate and use the best technologies available today.
  • A quality preview experience would not be available to all users because IE9 doesn't support new libraries such as PDF.js.
  • Box is unable to provide a quick and responsive UI to IE 9 users for lack of support with CSS transitions and animations, form validation and more.

Box users on these browsers will receive a dismissible in-app message that their browser will soon be unsupported. Eventually, users who try to access Box on either of these unsupported browsers (including on the associated compatibility modes for these browsers) will be blocked entirely from using Box until they have upgraded to a supported browser.