When WebView2 Runtime is installed on the device, no change is made to the user’s default browser selection.WebView2 Runtime doesn’t install Microsoft Edge (full browser) on the device and doesn’t require Microsoft Edge to be installed on the device.Therefore, in April 2021, we began installing WebView2 Runtime on devices running Windows and that have Version 2101 or later of Microsoft 365 Apps installed. If WebView2 Runtime isn’t installed on the device, your users won’t be able to make use of the Office features that rely on WebView2. WebView2 requires that Microsoft Edge WebView2 Runtime be installed on the device running Office. Office Add-ins will also start relying on WebView2. For example, by using WebView2, the Room Finder feature will look the same when using Outlook on a device running Windows and when using Outlook on the web. In turn, this consistent experience helps your users to learn and use those features without having to learn the nuances of Office on each device platform. WebView2 uses Microsoft Edge as a rendering engine to display web-based features in a desktop application.īy making use of WebView2, we can more easily provide your users with Office features that look and feel the same across device platforms. For example, the Room Finder and the Meeting Insights features in Outlook. If you find a bug, report it as an issue at OfficeDev/office-js.Microsoft 365 Apps is starting to provide new or improved features that rely on Microsoft Edge WebView2.We are working hard to bring the new Chromium based Edge WebView2 to the Office add-ins platform, which we expect will support Service Workers. Please see here for the latest supported features on the Edge WebView control. Please note that Service Workers are not supported on Microsoft Edge WebView for Office add-ins.The TableData object has more than one column.The TableData object has a header row, but no data rows.On Office builds before 1906 11727, a call of () will fail if all of the following conditions are met:.Using Fiddler: Select Tools > Win8 Loopback Exemptions and add an exemption to “Desktop App Web Viewer.”.Open a command prompt as Administrator and run the following command: CheckNetIsolation LoopbackExempt -a -n=”microsoft.win32webviewhost_cw5n1h2txyewy”.To fix this, follow either of these steps to add a local loopback exemption to “Desktop App Web Viewer”: When loading an Office add-in from or when using the Fiddler tool, you may see an error stating that a problem occurred while trying to reach your add-in.For your add-in to still run on Windows and Office versions that do not use the Microsoft Edge viewer, you will need to either transpile your JavaScript to ES5 or use a polyfill. If you haven’t used JavaScript later than ES5 in the past because Internet Explorer did not support it, you may want to start using ECMAScript 2015 or later.We recommend that you download the Microsoft Edge DevTools Preview for debugging.Windows 10, version 1903 will be released in May, 2019.Office 365, version 9 will be the next Office 365 monthly update.General Availability of the new versions of Windows and Office 365 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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