A number of features in Windows XP Professional are not included with Windows XP 64 Bit Edition. The following is a list of these features.
The following digital media features are not included with Windows XP 64 Bit Edition:
Digital video disc (DVD) video playback
CD Recording
Kodak Imaging Accessory
Windows Media Player
A subset of Windows Media Technologies
DirectMusic
Microsoft TV Technologies for Windows
Video mixing renderer (VMR)
NetMeeting
IEEE 1394 audio
Fax
Windows XP 64-Bit Edition does not provide support for a number of older subsystems and transport protocols, including the following:
Microsoft MS DOS subsystem
OS/2 subsystems
16-bit subsystems
Portable Operating System Interface for UNIX (POSIX) subsystem
Legacy transport protocols
Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX) LAN and WAN
AppleTalk Protocol LAN
Services for Macintosh
Data Link Control (DLC) LAN
NetBIOS Enhanced User Interface (NetBEUI) LAN
Service Advertising Protocol (SAP) Agent for Server
Internetwork Packet Exchange (IPX) router
Infrared Data Association (IrDA)
Open Shortest Path First (OSPF)
Network BIOS (NetBIOS) gateway
Windows XP 64-Bit Edition does not provide support for features aimed primarily at users of portable computers. The following features are not included:
Hot docking/undocking
PC Card
IrDA
Terminal Services client for Handheld PC
Power Management
The System Restore feature is not supported in Windows XP 64 Bit Edition.
The following networking and communications features are not included in Windows XP 64 Bit Edition:
Internet Locator Service (ILS)
MSN Internet Access client
Message Queuing (MSMQ) Level 8 Listener
Windows Messenger Service
SharePoint Team Services from Microsoft
The 64-bit versions of these database engines and features are not included in Windows XP 64 Bit Edition; 32-bit versions of Microsoft Database Engine (MSDE) and Jet RED are included.
Microsoft Database Engine (MSDE) 64-Bit
Jet RED 64-Bit
Microsoft Data Access Components (MDAC) Oracle provider
MDAC Oracle driver
MDAC Data Access Objects (DAOs)
MDAC Visual FoxPro Driver
Dynamic Data Exchange (DDE) Share
These system administration and management features are not supported in Windows XP 64 Bit Edition:
Winrep (Windows Report Tool)
Security Dynamics Access Control Entry (ACE) Agent
Windows Installer
Fast User Switching
Remote Assistance
File and Settings Transfer Wizard
Windows Product Activation (WPA)
Installation of Recovery Console on the hard disk; Recovery Console can be run from the operating system CD
Search Companion
Speech recognition