If a product includes downgrade rights, the license terms for that product will indicate which earlier versions of the software may be used. The following OEM versions of Windows software are eligible for downgrade rights. To downgrade Windows 10 or Windows 8.1 software, you must : Steps for an end user to downgrade Windows software Note: Other OEM Windows 7 versions (for example, Windows 7 Home Basic and Windows 7 Home Premium) do not include downgrade rights. Purchase a PC installed with Windows software.Īccept the Microsoft Software License Terms.