Evergreen Webview2

The runtime spins up an isolated browser process architecture (including network, GPU, and rendering processes) dedicated to your application window.

| Feature | Evergreen Runtime | Fixed Version Runtime | | :--- | :--- | :--- | | | Not packaged with the app; system-wide component. | Packaged directly inside the app bundle. | | Runtime Updates | Automatically updated by Microsoft in the background. | Updates only occur when the developer releases a new app version. | | Disk Space | Shared across all apps using the runtime, minimizing disk footprint. | Each app contains its own copy of the runtime; space usage is multiplied per app. | | Network Dependency | An internet connection is typically required for the initial installation (unless using the offline installer) and for automatic updates. | Can be installed entirely offline; no network dependency after app is deployed. | | Version Control | The app cannot specify or enforce a particular version of the runtime to be used. | The app uses exactly the version it ships with, providing perfect predictability. | | Recommendation | Microsoft's recommended default for most WebView2 apps. | Recommended only for applications with strict compatibility requirements or for deployment on air-gapped systems. |

Implementing the Evergreen model involves ensuring the runtime is present and updating the SDK in your code. 1. Distributing the Runtime There are two main approaches for deploying the runtime:

To ensure a smooth user experience, developers should follow these Development Best Practices from Microsoft Runtime Detection evergreen webview2

For more information, explore the Microsoft Edge WebView2 documentation to stay updated on the latest deployment strategies. For tailored advice, could you please tell me:

Because the Evergreen Runtime updates automatically, your web content must be tested against future versions before they are released to the public. You can achieve this by running your WebView2 app against the preview channels of Microsoft Edge: , Dev , and Canary [10†L37-L39]. This process, often called prerelease testing, allows you to identify and fix any compatibility issues with upcoming Chromium and Edge features well in advance, preventing unexpected breaks for your users.

Since the runtime is shared, your application installer does not need to include a large Chromium engine. The runtime spins up an isolated browser process

The represents a modern, robust, and developer-friendly approach to embedding web content in Windows applications. By leveraging the widespread availability of the runtime on Windows 10 and Windows 11, the system-wide sharing of binaries, and automatic updates, the Evergreen mode frees developers from the heavy burden of managing runtime distribution and updates.

Evergreen WebView2 is a runtime environment that allows developers to embed a modern web browser, specifically Microsoft Edge, into their desktop applications. This enables the use of web technologies such as HTML, CSS, and JavaScript to build desktop applications.

try // Attempt to get the available runtime version string version = CoreWebView2Environment.GetAvailableBrowserVersionString(); // Proceed with initialization catch (WebView2RuntimeNotFoundException) // Trigger your fallback or download prompt Use code with caution. Step 2: Handle the Evergreen Bootstrapper | | Runtime Updates | Automatically updated by

Because many core Windows apps (like Teams) now rely on it, the WebView2 runtime often reinstalls itself if manually removed by a user.

When a new version of Microsoft Edge stable releases (typically every four weeks), the Evergreen WebView2 Runtime updates alongside it. Minimizing Breaking Changes