If you (or your business) for some reason are still running the initial release of the Windows 10 operating system, you might want to think about upgrading to a newer build. Windows 10 was originally launched during the summer of 2015 with version 1507. Since that time, Microsoft has introduced a number of updates including last summer’s Anniversary

Source: Hot Hardware – Windows 10 Version 1507 Will No Longer Receive Security Updates After May Patch Tuesday