• "WINNT32.EXE is not a valid Win32 application" error message when you try to run the Winnt32.exe program from the installation CD for x64-based versions of Windows Server 2003 and Windows XP Professional x64 Edition
        Describes a problem that occurs when you try to run Winnt32.exe from an installation CD for an x64-based version of Windows on a computer that is running a 32-bit version of Windows.

        • The Hibernate tab is not available in the Power Options Properties dialog box in Windows XP Professional x64 Edition or in Windows Server 2003 x64 Editions
            Describes an issue where the Hibernate tab is not available in the Power Options Properties dialog box on your Windows XP Professional x64 Edition-based computer or your Windows Server 2003 x64-Edition based computer. A workaround is provided.

        • You cannot open the Active Directory Users and Computers MMC snap-in from within the Active Directory Domains and Trusts MMC snap-in on a computer that is running Windows XP Professional x64 Edition
            Describes a problem where you cannot open the Active Directory Users and Computers MMC snap-in from within the Active Directory Domains and Trusts MMC snap-in on a computer that is running Windows XP Professional x64 Edition.

            • You receive an "MCA_WARNING_UNKNOWN_NO_CPU" error message when you resume a computer from hibernation, and the computer is running one of the x64-based versions of Windows Server 2003 or Windows XP Professional x64 Edition
Describes a problem that may occur on an x64-based computer. To resolve this problem, upgrade the computer's BIOS.

        • You receive a "this system does not support a local APIC" error message when you try to install an x64-based version of Windows Server 2003 or Windows XP Professional x64 Edition
        Describes behaviour where you receive a “this system does not support a local APIC” error message when you try to install an x64-based version of Windows Server 2003 or Windows XP Professional x64 Edition. Provides a resolution for this behavior.

• A 32-bit IPX Winsock application generates a WSAEINVAL error in the x64 editions of Windows Server 2003 and Windows XP Professional
        Describes a situation where you cannot run a 32-bit IPX Winsock application on a computer that is running the x64-based versions of Windows Server 2003 or Windows XP Professional X64 Edition. To work around this problem, recompile the application.

        • You may receive an error message when you open a "Mini Kernel Dump" file that was generated by a 64-bit version of Windows Server 2003 or Windows XP Professional
            Explains why you may need to configure memory dump options to generate a Complete Memory Dump file or a Kernel Memory Dump file instead of a Small Memory Dump file.

             • The Windows Firewall service in Windows XP Service Pack 2, in Windows XP Professional x64 Edition, in Windows Server 2003 SP1, and in x64-based versions of Windows Server 2003 cannot start if the DCOM Process Launcher Service is disabled
Describes a problem where the Windows Firewall service cannot start successfully if the DCOM Process Launcher service is disabled.

            • You receive a "The event log file is corrupt" error on a computer that is running Windows Server 2003 SP1, an x64-based version of Windows Server 2003, or Windows XP Professional x64 Edition
Fixes an error that causes the System event log to become corrupted.

• PRB: Clicking USB mouse while going into standby may prevent mouse from waking system
            While the system is entering a standby (or suspended) state, if you click the USB mouse before the standby process is completed, the USB mouse or USB keyboard (or both) may not wake the computer. To work around this problem, avoid clicking the...

        • You may be prompted to restart the computer when you upgrade a computer that is running an x64-based version of Windows Server 2003 or of Windows XP from a uniprocessor to a multiprocessor configuration
        Describes an issue where you may have to start the computer two times after you change the processor configuration in an x64-based version of Windows Server 2003 or of Windows XP.

             • You receive an error message if you try to start the VBScript engine from a Microsoft C++-based program on a Windows Server 2003 Service Pack 1-based computer
        Provides a fix for a problem where you receive an error message if you try to start the VBScript engine from a Microsoft C++-based program on a Windows Server 2003 Service Pack 1-based computer.

            • When you connect to the Windows Update Web site by using the 64-bit version of Internet Explorer, the 32-bit version of Internet Explorer opens in an x64-based version of Windows
            Describes behaviour that occurs when you try to connect to Windows Update by using the 64-bit version of Internet Explorer from a x64-based version of Microsoft Windows.

• The Microsoft Speech Server 2004 Setup program cannot locate Internet Information Services on a Windows x64 Edition-based computer
            Describes a problem that occurs when you try to install Microsoft Speech Server 2004 on a Windows x64 Edition-based computer. In this scenario, the Speech Server 2004 installation process cannot locate IIS 6.0. Resolution is provided.

• Differences between the 32-bit and 64-bit versions of Internet Explorer that are included in the x64-based versions of Windows Server 2003 and in Windows XP Professional x64 Edition
            Describes differences and similarities between the 32-bit and 64-bit versions of Internet Explorer. Both versions of Internet Explorer are included in x64-based versions of Microsoft Windows.

• Registry changes in x64-based versions of Windows Server 2003 and Windows XP Professional x64 Edition
Describes some of the important registry changes that have been made in the x64 Edition version of the Windows operating system.

• The desktop wallpaper is redrawn slowly when you resume a Windows XP-based computer from hibernation
        Describes a problem where the Windows wallpaper is redrawn slowly when you resume Windows XP from hibernation. This problem is more pronounced if the wallpaper file is large or if the computer has been hibernated several times since the last restart.

• An MMC snap-in for a program is not available in the Add Standalone Snap-in dialog box in an x64-based version of Windows
        Describes a problem that occurs when you install a program that uses an MMC snap-in, and the snap-in is not available in an x64-based version of Windows.

             • Some Windows Explorer extensions and some Control Panel items are not displayed on computers that are running an x64-based version of Windows
            Describes an issue where Windows Explorer extensions and some x86 Control Panel items are not displayed on computers that are running an x64-based version of Windows. A workaround is provided.

            • You may lose processor power management features when you update the AMD processor driver on a multiprocessor computer that is running an x64-based version of Windows Server 2003 or Windows XP
            Describes how to resolve a problem where the Microsoft in-box driver is installed when you try to update the AMD Processor driver for your x64-based computer. You may lose processor power management features on a multiprocessor computer.

• Programs that use the QueryPerformanceCounter() function may perform poorly in x64-based versions of Windows
        Describes a problem that occurs when programs that use the QueryPerformanceCounter function perform poorly in x64-based versions of Windows

• You may receive an error message when you try to install a device driver on a computer that is running an x64-based version of Windows
Describes why you cannot install 64-bit drivers in an x64-based version of Windows.

            • You receive a "The system cannot change your password because the domain 'MIT Realm' is not available" error message when you try to change your password on your Windows XP-based computer
            Describes an issue where you receive a "The system cannot change your password because the domain 'MIT Realm' is not available” error message when you try to change your password on your Windows XP-based computer.

• You receive an error message when you add a driver for a mass storage device during setup of Windows Server 2003 or of Windows XP
            Describes a problem that may occur if you try to install the 32-bit version of a mass storage device driver on x64 editions of Windows, or if you try to install the 64-bit version of a mass storage device driver on 32-bit editions of Windows.