Computer Configuration > Administrative Templates > Microsoft Edge WebView2 > Loader Override Settings
Both
HKLM\Software\Policies\Microsoft\Edge\WebView2
This policy configures the channel search kind for WebView2 applications. By default the channel search kind is 0, which is equivalent to the "Most Stable" search kind in the corresponding WebView2 API; This indicates that WebView2 environment creation should search for a release channel from the most to least stable: WebView2 Runtime, Beta, Dev, and Canary. To reverse the default search order and use the "Least Stable" search kind, set this policy to 1. To set the value for the channel search kind, provide a Value name and Value pair. Set value name to the Application User Model ID or the executable file name. You can use the "*" wildcard as value name to apply to all applications. Example value: Name: WebView2APISample.exe, Value: 1