You may download Activator for Windows 8.1 on this page and activate it in 20 seconds. No activation through phone is required. Activator for Windows 8.1 Pro will save your money. Activators are suitable for Windows 8.1 build 9600. There are also keys for Windows 8.1. Activation matches Windows 8.1 x86 and Windows 8.1 x64 versions. Windows 8.1 is the Operating System of Windows NT Family manufactured by Microsoft Corporation. It follows Windows 8 and precedes Windows 10. It has a number of updates and improvements as compared to Windows 8 to facilitate the work with Windows 8.1. graphical interface.