We’re continuing to partner with the Microsoft Edge team to bring improved support for web standards to the Office add-ins platform. These will also continue to use Internet Explorer 11.Īt Microsoft Build 2019, the Microsoft Edge team also announced new capabilities for the next version of Microsoft Edge , built on the Chromium open source project.

These will also continue to use Internet Explorer 11.

Office running on versions of Windows 10 lower than 1903.

These will continue to use Internet Explorer 11 as the web viewer.

Non-subscription versions of Office for Windows.

For information about which browser’s web viewer is used on these platforms and operating systems, see Web viewers used by Office Add-ins.

Non-Windows Office versions, such as Office for Mac, iOS, Android, and Office Online.

The Microsoft Edge WebView performs much better than Internet Explorer and features enhanced compliance with modern browser standards including support of the full set of HTML 5 and ECMAScript 2015+. While it was cutting edge at the time, web development standards have continued to evolve.Īs we announced at Build 2019, to improve our support for web standards we are moving to an updated WebView control that is based on the current version of Microsoft Edge.īeginning with Office 365 version 9 and Windows 10 version 1903, Office Add-ins running on Office 365 for Windows will use a Microsoft Edge WebView as the runtime.

Since the creation of the Office Add-ins framework, add-ins running in Office on Windows used a web viewer control that leveraged elements of Internet Explorer 11.

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