JimR, quite so! Microsoft took over Skype and their software 'upgrade' stopped my Philips dual mode Skype / DECT phone working. Successive 'upgrades' seem just to plague us with yet more infuriating adverts.
But the biggest "Why on earth did you do that?" I have for Microsoft is the appalling Outlook 2016 e-mail program which comes with Office 365. My previous version was Outlook 2007, which was perfectly fine, as was Outlook Express before the Microsoft geeks killed it off...along with Photo Editor, AutoRoute and other programs. But I've been struggling to get Outlook 2016 to become anything like as user-friendly as was Outlook 2007. Silly messages like 'We didn't find anything to show here' are utterly puerile.