Microsoft Virtual PC 2004 Service Pack 1 (SP1) contains the latest software updates for Microsoft Virtual PC 2004 that improve the reliability, performance and manageability of Virtual PC. Updates have been made to improve the performance of Windows XP Service Pack 2 as a guest in Virtual PC, to improve the manageability of virtual machines when used with SMS 2003 Service Pack 1, and to provide support for running Windows Server 2003 Standard Edition as the host operating system.
Changes:
In particular, updates have been made to improve the performance of Windows XP Service Pack 2 as a guest in Virtual PC, to improve the manageability of virtual machines when used with SMS 2003 Service Pack 1, and to provide support for running Windows Server 2003 Standard Edition as the host operating system. SP1 also includes the following additional software updates:
A new Virtual Disk Precompactor. A utility that is designed to "zero out"—that is, overwrite with zeros—any available blank space on a virtual hard disk.
Updated version of Virtual Machine Additions.
Update to support TCP segmentation offloading. Prior to SP1, if TCP Segmentation Offloading was activated, some virtual networking features would not function correctly. With SP1, if your physical network adapter supports TCP segmentation offloading, you can activate TCP segmentation offloading, and virtual networking will function correctly.
Update to support Group Policy Software Installation. For more information about Group Policy Software Installation, see Help and Support Center in your Microsoft Windows Server 2003 operating system.
Update to change the default performance option from Give processes on the host system priority to Run Virtual PC at maximum speed.
The hotfix described in article 833506, which describes how Virtual PC 2004 may stop responding when a virtual machine is started, in the Microsoft Knowledge Base.
Download Virtual PC 2004 Service Pack 1 for Windows
