WebView2 Exception "The function should be called before any other API is called in 'CoreWebView2Environment' class"

[kentlhastings]

We are using WebView2 to display html content within AutoCAD 2022. Users run an AutoCAD command to display the WebView2 UI within a WPF window. For some of our users, after the WebView2 UI is run once and then closed, upon running the command to launch again, they receive the following exception message: "The function should be called before any other API is called in 'CoreWebView2Environment' class".

Here is the code we are using to initialize the UI:

Here is the code we are using to shutdown the UI:

Any insight you could provide for how to avoid this problem would be greatly appreciated

Thank you,

[victorthoang]

Hello @kentlhastings,

Thanks for your inquiry! I've assigned this to a dev that might best answer your question.

[novac42]

Thanks for providing the code snippet and we will take a look into it. Currently our team is a bit short on bandwidth and will try to give an update this month.

[LiangTheDev]

The message doesn't appear to be coming from WebView2 code, and also not sure about the Browser class. @kentlhastings if this is still an issue, could you please provide the full stack of the exception?