Base Operating System
Please Note! The Windows 10 Education Licenses included in the federal contract are only available as an upgrade. This means the product may only be installed on devices that already run a permitted base operating system. This could either be an operating system pre-installed by the hardware manufacturer (OEM-License) or a System Builder License.
The list of currently permitted base operating systems is available on the Product Terms > Windows Desktop Operating System page under "Qualifying OS - Per Device Licenses (Excluding Virtual Desktop Access Licenses)" in the "Academic & Charity" column.