Microsoft has made available free download of Windows 7 Enterprise edition for interested corporate and business customers as trial evaluation software. Windows 7 Enterprise free download has pre-installed product key which lasts for 90 days (3 months) after activated. Activation has to be done within 10 days or else the computer will shut down hourly.

Do note that Windows 7 Enterprise edition can only be activated via activation methods available for volume licensing channel methods that available for volume licensing channel, such as KMS host (Key Management Server) or MAK (Multiple Activation Key).

Note that officially, users who want to continue using Windows 7 Enterprise after its trial period expires will need to perform a clean install after acquiring a legit license for the OS. However, in actual, the usage of Windows 7 Enterprise can be easily extended or converted to production version by entering the new genuine full-version product key to perform new activation against Microsoft’s MAK server or corporate’s KMS host.

Windows 7 Enterprise can be downloaded from here.

The ISOs available are as follow:

32-bit Windows 7 Enterprise

English: 7600.16385.090713-1255_x86fre_enterprise_en-us_EVAL_Eval_Enterprise-GRMCENEVAL_EN_DVD.iso

SHA1: 971FC00183A52C152FE924A6B99FDEC011A871C2

64-bit Windows 7 Enterprise

English: 7600.16385.090713-1255_x64fre_enterprise_en-us_EVAL_Eval_Enterprise-GRMCENXEVAL_EN_DVD.iso

SHA1: 15DDABAFA72071A06D5213B486A02D5B55CB7070