Microsoft will end support for the Windows 7 operating system on Jan. 14, 2020. Windows 7 will continue to run on Jan. 14 as it did on Jan. 13. So why is it so important to upgrade to Windows 10? The answer: cybercrime. End of support means that Windows 7 no longer will receive the OS patches or security updates that keep your IT systems safe. Whether it's your personal home computer or the central conduit for your e-commerce business, using an unpatched out-of-date system is equivalent to leaving the door wide open for anyone to enter.