Windows Anytime Upgrade (Add Features to Windows) is a discontinued service by Microsoft introduced in Windows Vista that facilitated upgrades across successive editions of Windows Vista. Prices for upgrades purchased through Windows Anytime Upgrade were lower than prices for upgrades purchased at retail.Windows Anytime Upgrade is included in Windows 7 to allow users to upgrade to Windows 7 editions. In Windows 8 and Windows 8.1 it was rebranded as Add Features to Windows and was used to purchase an upgrade license for the Pro edition or to add Windows Media Center to an existing Pro installation. Support for this feature was discontinued on October 31, 2015. However, if the user got an upgrade key before the discontinuation date, the tool still works on Windows 7.