The Microsoft System Preparation tools enable you to customize Windows guest operating systems.

Using System Preparation tools is especially useful when you clone virtual machines. The guest operating system customization feature in vCenter Server leverages the functionality of the System Preparation tools. Ensure that your vCenter Server system meets the following requirements before you customize your virtual machine’s Windows guest operating systems:

Install Microsoft System Preparation tools. Microsoft includes the system tool set on the installation CD-ROM discs for Windows 2000, Windows XP, and Windows 2003. System Preparation tools are built into the Windows Vista and Windows 2008 operating systems.

Ensure that the correct versions of the System Preparation tools are installed for each guest operating system you want to customize.

Ensure that the password for the local administrator account on the virtual machines is set to blank (““).


Customization operations will fail if the correct version of sysprep tools is not found.