Because the web platform moves forward, a future Chromium update could theoretically break your frontend JavaScript or CSS layout.

The Evergreen runtime is located automatically by the WebView2 loader.

One of the most compelling aspects of the Evergreen distribution model is its deep integration with the Windows operating system. The Evergreen Runtime is preinstalled on as part of the operating system itself. Microsoft has also distributed the WebView2 Runtime to all eligible Windows 10 devices through Windows Update, meaning that a vast majority of Windows users already have the required runtime installed before your application ever reaches their machine.

Set CoreWebView2EnvironmentOptions.TargetCompatibleBrowserVersion if you require a specific baseline.

Pin the runtime to specific enterprise-safe updates.

By adopting the Evergreen model, developers benefit from reduced application size, lower maintenance overhead, and a future-proofed architecture that automatically receives security patches and performance improvements. The runtime's preinstallation on Windows 11 means that for a growing number of users, your application simply works without any additional setup.

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You can subscribe to the NewBrowserVersionAvailable event to know when the underlying Evergreen runtime has updated. This allows you to refresh your WebView2 or notify the user.

Because the Evergreen runtime is shared across the entire operating system, your application installer does not need to carry heavy Chromium binaries. This slashes your installer size by roughly 100MB to 150MB, leading to faster user downloads and reduced server bandwidth costs. 2. Zero-Maintenance Security Patches