Windows 7 pre-beta release has been leaked to Internet for free download, however, without a valid product key to activate the Windows 7, the system can only run for 30 days maximum, or up to 120 days with rearm hack.

Luckily, Windows Vista beta and RC product key can be used to activate Windows 7 beta version too (at least working on both Windows 7 build version 6801 32-bit (x86) and 64-bit (x64) editions. However, not all people is storing such an old information or email dated from 2 years ago.

While it’s possible to search for a valid product key using Google search engine, however, most of it may have been blacklisted or not working with Windows 7. But all hope is not lost, as it appears that some product key for Windows 7 pre-release preview (pre-beta version) have been leaked for free usage too.

Here’s a list of 15 Multiple Activation Key (MAK) which is the genuine legit product key for Windows 7 activation. Each product key can be used for unlimited number of client system activation, unlike a Windows Vista beta or release candidate key which limited to activate up to 10 copies of installed system.

J7PYM-XXXXX-XXXXX-XXXXX-BY7H9
D67PP-XXXXX-XXXXX-XXXXX-D4684
HQDKC-XXXXX-XXXXX-XXXXX-QDBB7
76DX2-XXXXX-XXXXX-XXXXX-BK44W
2RG93-XXXXX-XXXXX-XXXXX-3FMQT
TT63R-XXXXX-XXXXX-XXXXX-4CVWY
YQJX6-XXXXX-XXXXX-XXXXX-YPXJH
Q7J7F-XXXXX-XXXXX-XXXXX-2WKKM
KH4X7-XXXXX-XXXXX-XXXXX-YTPXH
WYBJ8-XXXXX-XXXXX-XXXXX-72Q9W
9DP2R-XXXXX-XXXXX-XXXXX-H3WYT
CXB7F-XXXXX-XXXXX-XXXXX-RK8Y6
W9BYV-XXXXX-XXXXX-XXXXX-KFDHB
WGDJW-XXXXX-XXXXX-XXXXX-B8PK8
2PHXF-XXXXX-XXXXX-XXXXX-XG87V

Note: Product keys been removed due to Notice of Infringing Activity – MS Ref. 307112 from Internet1@microsoft-antipiracy.com.

Windows 7 early pioneers (or genie pigs) can use one of the key to activate Windows 7 online or by phone activation.

Update: Official free giveaway of Windows 7 Beta product key now available. The Windows 7 product key distributed is actually the same set for everybody.