Microsoft has announced that users must download the latest Skype update if they want to continue using the service beyond this month. “At Skype, we’re committed to creating the best possible app experience for our users,” the company said. "Because we want to provide our users with the best possible Skype experience, necessary changes must be made along the way. So, beginning March 1, users running older versions of Skype for Windows desktop (7.16 and below) or Skype for Mac (7.0 to 7.18) will no longer be able to sign in. If you’re one of those users, all you’ll need to do is download the new update. For more information on which devices and operating systems Skype currently supports, please check our support site".