
I downloaded Mojave and Skype doesn't connect, and/or the other party can't hear me (on IOS12 and my iPhone10.) So looks like Apple is trying to block out Microsoft and Google, unwittingly, or purposefully? If your Mac isn't compatible with macOS Mojave, the installer will let you know. To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu.

Find Skype in the list, right-click it and select Remove or Uninstall.Uninstall Skype For Business Mac Os Mojave Free.Uninstall Skype For Business Mac Os Mojave 10 14 6.Make sure your computer will support Skype for Business: OS X El Capitan (10.11), macOS Sierra (10.12), macOS High Sierra (10.13), or macOS Mojave (10.14) Skype for Business 16.22 or newer is required for macOS Mojave Outlook Mac build 15.27 (161010) or newer required for Outlook integration. To completely un-install Skype for Business on a Macintosh co, use the steps below: Get on your personal computer through the use of administrative credentials.
SKYPE FOR BUSINESS MAC 16.14 HOW TO
Microsoft Support has an article that articulates how to do a ‘clean’ uninstallation of Microsoft Skype for Business on Mac. How To Remove Skype For Business On Macs.
