Sharing screen in Google Meet is not working

[STorm175]

Description
I created a demo app that uses WebView2 in the WinForms framework (follow https://docs.microsoft.com/en-us/microsoft-edge/webview2/get-started/winforms).
I use sharing screen feature of google meet. It is not working correctly while it works well in Microsoft Teams.

Version
SDK: 1.0.1018.0-prerelease
Runtime: Microsoft.WebView2.FixedVersionRuntime.94.0.992.38.x64 and Canary preview channel 96.0.1039.0
Framework: WinForms
OS: Win10 Home 20H2 19042.1237

Screenshots

AB#37330550

[STorm175]

@federicorosso1993 I don't think it not related to this issue. I found an error log when I click sharing screen button. In the picture below, the cause of the bug is NotAllowedError: Invalid state which seems from getDisplayMedia() always returns "NotAllowedError

But I call navigator.mediaDevices.getDisplayMedia() command. It works on another site except in google meet

[STorm175]

@champnic Please tell me how to use sharing screen in Google meet. I got stuck on this problem for a long time.

[champnic]

Hey @STorm175 - if I understand correctly, screen sharing is working on Teams and when calling navigator.mediaDevices.getDisplayMedia(), but just not through Google Meet by default? Do you want to try subscribing to the PermissionRequested event, it's possible that's firing and needs to be accepted (just a guess based on the screenshot with the "You must grant permissions" dialog).

[STorm175]

@champnic I subscribed the PermissionRequested event but the event didn't fire.

I checked the default browser which has full permissions, it still not working

[champnic]

Thanks for checking - I've added this as a bug on our backlog.

[monica-ch]

@STorm175 Google Meet requires a browser extension and extensions are disabled in WebView2. To enable hangout services in WebView2, you can use this command switch edge-webview-enable-builtin-background-extensions which can be passed using AddtionalBrowserArgument. This is unsupported and could break in the future, but we'll keep this case in mind when we look at WebView2 supporting extensions in #191 and #98