Microsoft Edge Webview2 Offline Installer -

Instead of a traditional installer, this is a .zip file containing the specific WebView2 Runtime binaries. You package this directly alongside your application.

Microsoft Edge WebView2 is a control (a "box") that developers embed into their Windows applications. Instead of building a custom browser engine from scratch (which is heavy and insecure), developers use WebView2 to render web content—HTML, CSS, JavaScript—inside a native desktop app.

The "Bootstrapper" installer was used instead of the "Standalone" installer. The bootstrapper is a small file that requires an active internet connection to pull down assets.

Unlike the standard —a tiny file that downloads components during installation—the offline installer includes all necessary binaries within the package.

The Evergreen Runtime is preinstalled on all Windows 11 devices as part of the operating system. Microsoft has also pushed the WebView2 Runtime to all eligible Windows 10 devices. Even if your app uses the Evergreen distribution mode, Microsoft recommends that you distribute the WebView2 Runtime in your installer to cover edge cases where the runtime was not already installed. microsoft edge webview2 offline installer

This is the recommended offline installer for most use cases.

The offline installer is . To update:

对于 Fixed Version 模式，提取 CAB 文件后需要确保所有文件在客户端磁盘上的完整可用性。确保您的应用能够通过 CoreWebView2Environment.CreateAsync(browserExecutableDir: ...) 明确指向该固定版本运行时。

—— 根据 2025 年 7 月的社区讨论，用户尝试在 Windows 7 x86 系统上获取 WebView2 运行时离线安装包时遇到问题，发现官方下载的在线引导程序无法在离线环境中完成安装。离线安装包是解决此类问题的最佳方案。 Instead of a traditional installer, this is a

You accidentally downloaded the bootstrapper instead of the standalone offline installer. Solution: Verify the file size. If it is less than 10 MB, delete it and download the 150 MB standalone version.

Many enterprise or government networks block external internet access for security and compliance reasons.

If successful, this query returns the currently installed version number of the WebView2 Runtime. Common Troubleshooting Steps

Preventing hundreds of machines on a local network from downloading the same files simultaneously. Instead of building a custom browser engine from

The Evergreen distribution mode is the recommended approach for most developers. In this mode, the WebView2 Runtime is not packaged with your app. Instead, it is initially installed onto clients using an online bootstrapper or an offline installer. Afterwards, the WebView2 Runtime is automatically updated on client machines.

This creates three major headaches for IT admins:

—— 在企业 IT 环境中，IT 管理员需要一次性为成百上千台计算机安装 WebView2。如果让每台机器都通过互联网下载安装文件，不仅会浪费大量带宽，还会导致部署时间不可预测。而离线安装包支持静默安装，可以实现无人值守的自动化部署。

https://msedge.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/.../MicrosoftEdgeWebView2RuntimeInstallerX64.exe