samples/msal-node-samples/ElectronSystemBrowserTestApp/public/successTemplate.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Electron system browser auth redirect page</title>
    <style>
    .container {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 10px;
        font-size: 20px;
     }
    </style>
    <script>
        /*
         * We are using the ClientID to assign a unique protocol to the application as a deep link. 
         * If you like, you can replace this value with any unique string e.g. `your-unique-protocol-name://`. 
         * This is to ensure that this deep link only matches to your own application and does not coincide with 
         * other application deep links that might be registered on your system. For more information, 
         * please check https://www.electronjs.org/docs/latest/tutorial/launch-app-from-url-in-another-app
         *   
         */
        addEventListener('DOMContentLoaded', (event) => {
            window.location.href = 'msal{Enter_the_Application_Id_Here}://auth'
        });
    </script>
</head>
<body>
    <div class='container'>
        <h5>You are now signed in. You may close this window.</h5>
        <p>
            This page is for handling redirects only. Login through the electron application first to receive an authorization code.
        </p>
    </div>
</body>
</html>