May 31, 2007 is the last day of full functionality for Customer Preview Program versions of Vista.
"The OS will gradually shut itself down in stages, and do it in an unusual way: Starting Friday, a user can log on to the OS for two-hour sessions only. After two hours, the OS will automatically reboot, without offering a chance to save. That leaves a two-hour window to save work, transfer settings and so on to another OS. Any work not finished within that span will be lost when the machine reboots.
That cycle will last until Aug. 28, after which time the OS will shut down for good. Users of pre-release versions can upgrade to RTM versions of Vista, or do a clean install of earlier Windows versions, like XP. Vista pre-release does not offer a "roll-back" ability to return to an earlier OS."
Thu, May 31 2007 12:15