*If you are running Windows 8 Enterprise you must have active Software Assurance for the Windows desktop operating system to have rights to Windows 8.1 Enterprise licenses. Volume Licensing customers can download Windows 8.1 Pro and Windows 8.1 Enterprise through the Volume Licensing Service Center and new customers can purchase these products through Microsoft Volume License Resellers beginning November 1.
** Windows 8 Enterprise is available exclusively as a benefit of Microsoft Software Assurance through Volume Licensing programs such as Select Plus, Enterprise Agreement, and Enterprise Subscription Agreement. Customers with existing Microsoft Software Assurance for Windows are able to download Windows 8 Enterprise edition through the Volume License Service Center (VLSC), allowing you to test, pilot and begin adopting Windows 8 Enterprise within your organization. Volume License customers without Software Assurance are able to purchase Windows 8 through Microsoft Volume License Resellers.