https://www.skype.com/ja/get-skype/ Skype for Windows をダウンロード も Skype-8.67.0.96.exe

12/18 追記 Opera 73.0.3856.284 Stable update 追記終わりhttps://blogs.opera.com/desktop/changelog-for-73/ Not Found Chrome/87.0.4280.88