Edge-based HTML Renderer for Outlook Add-in: window.open() popup is missing maximize button

Question

Add-ins on the Outlook for Windows 10 desktop app use Edge-based HTML renderer . I'm trying to open a popup with window.open() command shown below:

 var popupDimensions = "height=800,width=600"; var link = 'https://same-domain-of-addin.com/some/page'; window.open(link, null, [ popupDimensions, "resizable", "scrollbars", "location", "status", "menubar" ].join(','));

This opens a new popup dialog (which is again Edge-based ) but however it does not honor these flags fully:

• "resizable" -> While I can drag around the edges to enlarge it, the maximize button is not there
• "popupDimensions" -> Height and width are not honored . By default, it's opening at roughly 50% height and width of my screen (assume my desktop's res is 1280x720)

Is there a workaround to make the window have the following properties? ( in descending order of preference ):

1. show maximize button
2. show the window maximized (second best case)
3. use default browser (best case for us)
4. set the window size when opening (minimum improvement required)

Answer 1

This behavior is by-design. The windowFeatures parameters are not applicable in Edge Webview based win-32 Outlook. We track Outlook add-in feature requests on our user-voice page . Please add your request there. Feature requests on user-voice are considered, when we go through our planning process.

An alternative is to call window.open with a url that is not in a domain in your AppDomains. This will pop out to the default browser instead.