Known Issues - Microsoft Edge Legacy

Supported on UFT One 23.4 and earlier

This topic describes known issues when using UFT One to test web applications running in the Microsoft Edge Legacy browser.

Note: Microsoft has replaced their HTML-based Edge browser with a Chromium-based Edge browser.

For known issues when working with Chromium-based Microsoft Edge, see Known Issues - Google Chrome, Microsoft Edge, and Mozilla Firefox.


  • You must open the Edge Legacy browser session using the Edge Agent for UFT. UFT One cannot spy, record, or run tests on an existing Edge Legacy browser session.

    You can start the Edge Agent for UFT from one of the following locations:

    • Open Edge Agent for UFT (available from the Windows Start menu).

    • In the Record and Run Settings dialog box, select Edge as the Browser type

    If these methods fail to launch the browser, try the recommendations in this Microsoft article: Microsoft edge can't be opened using the built-in administrator account.

  • If you are using the Microsoft Edge Legacy insider version, you must have insider version 10576 or later. However, due to changes in the Web Driver insider build by Microsoft, later versions may not work with UFT.

  • Each step performed by Edge Legacy has a short delay due to the Edge Agent's injection of JavaScript in the browser.

  • All Web 2.0 toolkits (ASP .NET AJAX, Dojo, Ext-JS, GWT, jQueryUI, SiebelOpenUI, and YahooUI), are not supported when using Edge Legacy versions 10576 and earlier.

  • The Ext-JS, SiebelOpenUI, and YahooUI are not supported on any Edge Legacy versions.

  • If you open a tab in an Edge Legacy browser with the Edge Agent for Functional Testing, you should perform at least one action in the browser to enable UFT One to use the necessary mechanism to communicate with this tab. 

  • When identifying objects in an application or running test using multiple tabs in an Edge Legacy browser, the focus may unexpectedly switch between tabs in the browser window. This does not affect your test run or object identification.

  • Multiple Edge Legacy browser windows are not supported.

  • The Web > Advanced settings in the Options dialog box (Tools > Options > GUI Testing tab > Web > Advanced node) are not supported.

  • For details about versions supported for replay, see Recording.

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Object identification

  • If you open multiple tabs on an Edge Legacy browser, then manually close a tab, UFT One will experience unexpected behavior when attempting to spy on the remaining tabs.

    Workaround: Open only one tab at a time when using Edge Legacy with UFT One or open/close tabs using UFT One test object methods.

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Test objects, methods, and properties

  • The following test objects, methods, and other Web-specific functionalities are not supported:

    • Browser About:* pages

    • Browser.ClearCache

    • Browser.DeleteCookies

    • Browser.FullScreen

    • Browser.Home

    • Browser.IsSiblingTab

    • Browser.Object

    • Browser.Stop

    • ViewLink objects

    • WebFile objects

    • WebAgGrid and WebUIGrid objects

    • Test objects in apps developed with Shadow DOM

  • Web Accessibility toolkit objects (WebMenu, WebTabStrip, and WebTree, and objects created with the "role=" property

  • The following test objects are not supported when using Windows 10 versions earlier than 10576:

    • Frame and Frameset objects

    • Dialog objects

  • The following SAPUITable methods may result in error if the object was added by spying or recording on Edge Legacy, in the same instance. In such cases, restart your browser to run your test successfully:

    • DeselectRow
    • FindRowByCellContent
    • GetCellDataEx

    • MoveColumn
    • SelectRow

    • SetCellData

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  • Record and replay on Edge Legacy is supported as follows, depending on the Windows:

      Windows 10 (build 10585 or earlier) Windows 10 build 10586, or later
    Recording on a single tab No Yes
    Recording on multiple tabs No No
    Replay on a single tab Yes Yes
    Replay on multiple tabs No Yes
  • The following objects and methods are not recorded on Edge Legacy:

    • Web 2.0 controls

    • Browser.OpenNewTab

    • Browser.Close

    • Browser.CloseAllTabs

    • Frame objects

    • Pop-up dialog boxes

    • Navigation operations are sometimes not recorded.

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Active Screen

The Active Screen is not supported on Edge Legacy browsers.

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See also: