[Bug]: Offline installer can't work on windows 7

[winsoft666]

What happened?

Evergreen Standalone Installer can't work on windows 7.

OS version: 6.1.7601.

Please help me, this is very important for me, thanks!

Importance

Blocking. My app's basic functions are not working due to this issue.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

No response

SDK Version

No response

Framework

Win32

Operating System

Earlier than Windows 10 (deprecated)

OS Version

6.1.7601

Repro steps

Download standalone installer from https://developer.microsoft.com/en-us/microsoft-edge/webview2?form=MA13LH#download-section, then run it.

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

No, this never worked

Last working version (if regression)

No response

[victorhuangwq]

Windows 7 is not a supported platform for WebView2. The last supported version of WebView2 on Windows 7 is 109
https://learn.microsoft.com/en-us/microsoft-edge/webview2/#supported-platforms

[winsoft666]

After some research, I found reason.

The new version of Evergreen Standalone installer does not support Win7, but Evergreen Bootstrapper still supports downloading version 109 on Win7.

But Bootstrapper uses the HTTPS protocol to download, if Win7 does not have KB4474419 patch installed, the installation will fail.