Evergreen Webview2

While the benefits are massive, letting Microsoft update your rendering engine automatically introduces specific development responsibilities. Breaking Changes and Regression Risk

and later, the Evergreen WebView2 Runtime is included as part of the operating system, though it still receives automatic updates. 3. Developer Considerations

Always include the Evergreen WebView2 Runtime Bootstrapper in your application installer to handle machines that miss the runtime.

While Chromium updates prioritize backwards compatibility, regressions can happen. Microsoft mitigates this through a structured release cadence and dedicated developer tools:

Will this app deploy to with locked updates? evergreen webview2

For nearly a decade, developers building hybrid desktop applications on Windows faced a frustrating dilemma. You could either bundle a full Chromium browser (adding 80–100MB to your installer), rely on the legacy, outdated Trident engine (Internet Explorer), or depend on the user’s local, unpredictable Edge HTML engine.

Chrome, Firefox, and Edge are evergreen browsers. The old Internet Explorer was not (it required OS-level patches).

When Microsoft introduced WebView2, they solved a major pain point for Windows developers: hosting web content inside a native application without the heavy baggage and security risks of the old WebBrowser control (which relied on Internet Explorer).

WebView2 is a control that allows developers to embed Chromium-based Microsoft Edge into desktop applications. Unlike its predecessor, the WebBrowser control (which used Internet Explorer), WebView2 complies with modern web standards, supports features like WebRTC, Service Workers, WebGL, and receives security updates via Edge's lifecycle. While the benefits are massive, letting Microsoft update

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.

For newer systems, the Evergreen WebView2 Runtime is already included as part of the operating system.

: Developers do not need to ship new versions of their application just to update the underlying web engine. Microsoft Developer Technical Characteristics Microsoft Edge WebView2

Microsoft offers two distribution modes for the WebView2 Runtime: and Evergreen . For nearly a decade, developers building hybrid desktop

The primary reservation developers have about the Evergreen model is predictability: What if a Microsoft Edge update breaks my application?

In software, an component is one that automatically updates itself in the background without user intervention or application restarts. Think of Google Chrome, Microsoft Edge, or Firefox. You almost never download a "Chrome 2024 Edition" installer. You simply open the browser, and it is always fresh.