How to use WebView2 AddBrowserExtensionAsync in UWP?

Victor Chen 106

Attempted to use webView.CoreWebView2.Profile.AddBrowserExtensionAsync(extensionPath) but received the exception "The request is not supported."

It's understood that AreBrowserExtensionsEnabled must be set to True, and the property is found in CoreWebView2EnvironmentOptions. However, CoreWebView2Environment.CreateAsync no longer allows passing CoreWebView2EnvironmentOptions parameters like in WPF.

What steps should be taken to resolve this? Is there something being overlooked?

Roy Li - MSFT 33,501 Reputation points Microsoft Vendor

2024-12-20T02:29:34.4033333+00:00

Hope you've been well. Any updates about this issue?

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Junjie Zhu - MSFT 19,751 Reputation points Microsoft Vendor

2024-12-09T07:49:02.7266667+00:00

Hello @Victor Chen ,

Welcome to Microsoft Q&A!

Please use CoreWebView2Environment.CreateWithOptionsAsync(CoreWebView2EnvironmentOptions) to enable the AreBrowserExtensionsEnabled.

Thank you.

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Victor Chen 106 Reputation points

2024-12-16T07:39:49.3+00:00

Hi @Junjie Zhu - MSFT ,

Thanks for the reply. Now I can create a WebView2 instance with options and set "AreBrowserExtensionsEnabled" to true. However, I get an exception when I call "AddBrowserExtensionAsync". The exception message is "The request is not supported." The extension path argument is a Vue dev-tools extension that I found in the Edge extension folder.

Could the issue be related to the extension path or the specific extension I am trying to add?

var webView2Environment = await CoreWebView2Environment.CreateWithOptionsAsync(string.Empty, string.Empty, new CoreWebView2EnvironmentOptions() { AreBrowserExtensionsEnabled = true, }); await webView.EnsureCoreWebView2Async(); await webView.CoreWebView2.Profile.AddBrowserExtensionAsync(@"%localappdata%\Microsoft\Edge\User Data\Default\Extensions\olofadcdnkkjdfgjcmjaadnlehnnihnl\6.6.3_0");

Junjie Zhu - MSFT 19,751 Reputation points Microsoft Vendor

2024-12-16T09:42:58.32+00:00

please add Environment in EnsureCoreWebView2Async(CoreWebView2Environment)

await webView.EnsureCoreWebView2Async(webView2Environment);

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Junjie Zhu - MSFT 19,751 Reputation points Microsoft Vendor

2024-12-24T08:00:38.7866667+00:00

Hello @Victor Chen ,

May I kindly ask if you have tried the code provided above? Are there still any exceptions being thrown?

Thank you.
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How to use WebView2 AddBrowserExtensionAsync in UWP?

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