This version adds support for the Itanium 2 processors and is based on the Windows Server codebase. Unlike x86 versions of Windows XP, it didn't have the Luna theme and was still missing several features compared to the x86 versions of Windows XP. Since the decision to end support for this version of Windows was made during the development of Service Pack 1 , only pre-release builds up to build All later builds can only be installed on Windows Server and will fail with an error message when attempting to install them on Windows XP Bit Edition, Version Build list legend Available build.
Confirmed build. Unconfirmed build. Fake build. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. This article discusses the compatibility considerations and limitations for bit programs that are running on bit versions of Windows.
The bit versions of Windows use the Microsoft Windowson-Windows WOW64 subsystem to run bit programs without modifications. The bit versions of Windows don't provide support for bit binaries or bit drivers. Programs that depend on bit binaries or bit drivers can't run on the bit versions of Windows unless the program manufacturer provides an update for the program.
There may be considerations that affect a program's compatibility or performance. You can determine whether a program will have compatibility or performance issues by testing the program on one of the bit versions of Windows. This article describes some of the compatibility considerations for running bit programs on the bit versions of Windows. This article doesn't compare the bit and bit versions of Windows, or different bit operating systems.
This article assumes that you understand the difference between bit binaries and bit binaries. The xbased versions of Microsoft Windows are optimized to run native bit programs. Additionally, the xbased versions of Windows use the WOW64 subsystem to run bit programs. The WOW64 subsystem enables bit programs to run without modification on the xbased versions of Windows. The WOW64 subsystem does this by creating a bit environment on the xbased versions of Windows.
To view this document, visit the following Microsoft Web site: Running bit Applications. The WOW64 subsystem creates a bit environment on the xbased versions of Windows.
Some bit programs may run slower on these operating systems than they would on bit versions of Windows. Alternatively, some bit programs that require lots of memories may exhibit increased performance on the xbased versions of Windows. This performance increase occurs because the xbased versions of Windows supports more physical memory than the bit versions of Windows. For more information about the differences in memory management between the bit and bit versions of Windows, see the "Virtual Address Space" topic in the About Memory Management section of the Microsoft Platform SDK documentation.
The xbased versions of Windows doesn't support bit programs or bit program components. The software emulation that is required to run bit programs on the xbased version of Windows would significantly decrease the performance of those programs. A bit installer is frequently used to install and configure a bit program.
Additionally, some bit programs require bit components to run correctly. Although bit programs that require bit components might run correctly after they're installed, you can't use the bit installer to install a bit program. This may lead to the need for library developers to provide both and bit binary versions of their libraries. Windows XP x64 Edition includes both and bit versions of Internet Explorer , in order to allow for the possibility that some third-party browser plugins or ActiveX controls may not yet be available in bit versions.
Older bit drivers and services are not supported by bit Windows, but video and audio codecs such as XviD or OggDS, which are in fact bit DLLs, are supported as long as the media player that uses them is bit as well. This includes popular video players such as Media Player Classic. Microsoft Wiki Explore. Windows families. Windows Windows 11 Windows 10 Windows 8.
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