Skype is retiring the Modern UI version of the app on July 7. On that date, users of the touch-friendly version app will be transitioned over to the traditional version of Skype. Previously Microsoft maintained two versions of its video conferencing software Skype.
The Windows 8 Store version is being discontinued which will pave way for a universal touch friendly desktop version of Skype in Windows 10. This ends the consumer confusion for customers who had both version of Skype installed on their computer and sometimes notifications and messages got mixed up.
This moves comes after Microsoft announced Windows 10 where one app runs on all devices. Plus the Windows 8 (Modern UI) version of Skype was unpopular and usually laggy.