Windows 7 Enterprise edition is a special edition of Windows 7 which is offered only to enterprises, companies and corporations with volume licensing agreements which have a Software Assurance contract with Microsoft, and is typically installed on business PCs. Windows 7 Enterprise can only be activated via KMS method or MAK product key, but not by using retail product key or OEM activation method, which … Continue reading Downgrade (Upgrade) Windows 7 Enterprise to Ultimate, Professional or Home Premium