- Microsoft offers free Windows 7 RTM trial | Computerworld Looking for: Windows 7 professional trial free Click here to DOWNLOAD Windows 7 professional trial free.Windows 7 Professional (x32) Except for a short form, however, Microsoft makes no effort to qualify eligible users, giving anyone the opportunity to try out the new operating system before it ships on Oct. According to Stephen Rose, a senior community manager for Windows, the free trial will be available until March 31, , or until an unspecified number of copies have been downloaded, whichever comes first. There are other not-so-subtle limitations. The Windows 7 trial must be activated within 10 days after it's installed -- not the usual 30 days -- but no separate product key is necessary, as it's built into the software. At the day mark, the trial automatically, and without warning, shuts down the PC every hour of operation. The trial is a fully-functional Enterprise edition -- which...