Install the Microsoft Sysprep tool so that you can customize Windows guest operating systems when you clone virtual machines.
The guest operating system customization feature in vCenter Server uses the functions of the Sysprep tool. Verify that your vCenter Server meets the following requirements before you customize your virtual machine’s Windows guest operating systems:
Install the Microsoft Sysprep tool. Microsoft includes the system tool set on the installation CD-ROM discs for Windows 2000, Windows XP, and Windows 2003. The Sysprep tool is built into the Windows Vista and Windows 2008 operating systems.
The correct versions of the Sysprep tool is installed for each guest operating system that you want to customize.
The password for the local administrator account on the virtual machines is set to blank ("").
Customization operations will fail if the correct version of the Sysprep tool is not found.