Article ID: 954753 - View products that this article applies to.
This article describes messages that you receive when you run Windows Vista with a prerelease build of Windows Vista Service Pack 1 (SP1). You must uninstall the Windows Vista SP1 update package before the license expiration date. Steps are provided to uninstall the prerelease SP1 package.
When you run Windows Vista with a prerelease build of Windows Vista SP1, you receive one of the following messages.
Note The placeholder n is a number from 14 through 2.
Your Windows License will expire in n days.
Note The placeholder n is a number from 24 through 0.
Your Windows license will expire in n hours.
Your computer session ends unexpectedly two hours after startup. In this situation, you receive the following error message:
By restarting the computer, you obtain an additional two hours.
Note On Windows Vista Enterprise or Windows Vista Business editions that have been installed by using a volume license key, you will receive message 3 only after two hours, and the Windows Vista prerelease system stops functioning without any additional warning. Additionally, Windows Vista performs one of the following actions, and any unsaved work is lost:
Before you reach the license evaluation expiration date, you must uninstall the Windows Vista SP1 update package.
To uninstall the Windows Vista SP1 update package, follow these steps:
948537Note If you installed a slipstream version of Windows Vista SP1 (the full installation of Windows Vista together with the service pack), you must perform a full reinstallation of Windows Vista by using a valid license.
(http://support.microsoft.com/kb/948537/ )How to uninstall Windows Vista Service Pack 1 as a troubleshooting step
Prerelease build informationPrerelease versions of Windows Vista SP1 were made available to the public together with an evaluation license that expires on a pre-arranged schedule. The schedule is stated in the Microsoft Software License Terms of the Windows Vista SP1 update package. The prerelease builds are known as the following:
Evaluation time period for the Windows Vista SP1 update packageWindows Vista SP1 includes an evaluation expiration date and a limited license that both expire on a pre-arranged schedule. This schedule is stated in the Microsoft Software License Terms of the Windows Vista SP1 update package. The evaluation period is for three months, and then the limited license expires. When the limited license expires, you receive a warning message to uninstall the service pack or to install a valid Windows Vista license. The following table lists the full schedule for the public build releases:
Collapse this tableExpand this table
Timeline for license expiration
Evaluation time period for an integrated installation of Windows Vista SP1If you installed a prerelease version of Windows Vista SP1 as a clean installation and not through the update package, you must reinstall Windows Vista by using a valid license. In some cases, you may be able to upgrade to a version of Windows Vista that includes SP1. See the documentation that is included with your Windows Vista licensed software to determine what installation methods are available.
Article ID: 954753 - Last Review: July 13, 2008 - Revision: 3.1