http://bugs.winehq.org/show_bug.cgi?id=48006
--- Comment #64 from Chiitoo chiitoo@gentoo.org --- Trying with the "mutation patch" when the comment was entered here, it worked for me as well, but trying now with or without I got dialogs in order:
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Microsoft Edge WebView2 Runtime is required to starts the launcher. Opening the installation window.
[ OK ]
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Installation failed. Microsoft Installer requires Windows 2000 Service Pach 4 or better.
[ OK ] (I have installed Linux)
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Microsoft Edge WebView2 Runtime could not complete installation. Start launcher using temporary display?
[Yes] [No]
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With [Yes] the launcher started as before, with the patch, but this was not a clean prefix.