Trying to set WebView2 User Data the same as installed Edge

[derekantrican]

I have an application hosting a WebView2 instance (on Windows) where I want the behavior of the WebView2 to be identical to Edge (cache, cookies, extensions, etc). I have set the user data folder like this:

var options = new CoreWebView2EnvironmentOptions(null, null);
var userDataFolder = @"C:\Users\deantric\AppData\Local\Microsoft\Edge\User Data";
CoreWebView2Environment.CreateAsync(null, userDataFolder, options);

However, navigating to different sites on WebView2 that I have logged into on Edge doesn't show me as already logged in. And edge://system (in WebView2) doesn't show any of the Extensions that I've installed in Edge.

Am I setting the wrong User Data path? Or is there some other way to align these two?

[derekantrican]

After a couple years, AI has gotten quite good and Claude was able to find the right solution:

                string userDataFolder;
                if (UseEdgeCookies)
                {
                    // Point to Edge's default profile to share cookies/auth sessions.
                    // This lets WebView2 access sites that the user is
                    // already signed into in Edge without an extra auth prompt.
                    userDataFolder = System.IO.Path.Combine(
                        Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
                        "Microsoft", "Edge", "User Data");
                }
                else
                {
                    userDataFolder = System.IO.Path.Combine(
                        Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
                        "MyApp", "WebView2");
                }

                var options = new CoreWebView2EnvironmentOptions
                {
                    // Enable SSO using the OS primary account (Azure AD/Entra).
                    // This lets WebView2 authenticate to corporate sites
                    // without a manual login prompt, just like Edge does.
                    AllowSingleSignOnUsingOSPrimaryAccount = true
                };

                _environment = await CoreWebView2Environment.CreateAsync(
                    browserExecutableFolder: null,
                    userDataFolder: userDataFolder,
                    options: options);