Visit TechNet Downloads, sign in at the top right and let the page load Within the same window copy and paste "https://www.microsoft.com/betaexperience/scripts/gcs.aspx?Product=tn-win7-64-ww&LCID=1033" into the address bar (yes it's a 64bit key but will work on 32 too, if you get an error refresh a few times)...enjoy the result below, whilst stocks last. If you are still having issues try clearing your temp files and deleting all cookies.It doesnt work , redirects to win 7 main page

Please read the forum announcements regarding the beta release and key availability.- John

Even though the Windows 7 Beta customer preview is over, you can still look up or register for product keys.