The DeX for PC service for Mac OS / Windows 7 OS will be terminated as of January 2022. In case of Windows 7 OS, Windows 7 technical support from Microsoft (MS) will be terminated, and it will be ended in accordance with the Service Operational Policy in case of MAC OS. Operational Policy No technical support, updates, or download links for DeX installation files will be provided for Mac OS after this date. It will still be available for use on Windows 10 OS, so please use it after updating your OS. (For matters related to OS update, please contact Microsoft). For any further questions or assistance, users can contact Samsung Customer Service through Samsung Members.