Install this update to address an issue that will keep some applications from running in a 64-bit environment. When you try to run a 64-bit application that uses an Interface Remoting component of Microsoft Data Access Components (MDAC) 2.8, you may receive an "access violation" error message, or the dllhost.exe process may display 100% CPU utilization when viewed with Task Manager. After you install this item, you may have to restart your computer. Update for Windows Server 2003 (32-bit x86) (KB904639) Update for Windows Server 2003 x64 Edition (KB904639) Update for Windows Server 2003 for Itanium-Based Systems (KB904639)