Some of the programs and features that were part of the previous versions of Windows did not make it to Windows XP. DLC and AppleTalk network protocols are removed.
Plug-and-play—incompatible communication devices like modems and network interface cards are no longer supported. The Energy Star logo and the address bar on the taskbar are removed in Service Pack 3.
It is based on the category of the edition grey and codebase black arrow. Windows XP was released in two major editions on launch: Home Edition and Professional Edition. Both editions were made available at retail as pre-loaded software on new computers, and in boxed copies.
Boxed copies were sold as "Upgrade" or "Full" licenses; the "Upgrade" versions were slightly cheaper, but require an existing version of Windows to install. The "Full" version can be installed on systems without an operating system or existing version of Windows.
Home Edition is explicitly intended for consumer use and disables or removes certain advanced and enterprise-oriented features present on Professional, such as the ability to join a Windows domain , Internet Information Services , and Multilingual User Interface.
The OS is primarily aimed at first-time computer owners, containing heavy localization including wallpapers and screen savers incorporating images of local landmarks , and a "My Support" area which contains video tutorials on basic computing tasks.
It also removes certain "complex" features, and does not allow users to run more than three applications at a time. After a pilot program in India and Thailand , Starter was released in other emerging markets throughout As it was sold at the same price as the version with Windows Media Player included, certain OEMs such as Dell , who offered it for a short period, along with Hewlett-Packard , Lenovo and Fujitsu Siemens chose not to offer it.
Consumer interest was minuscule, with roughly 1, units shipped to OEMs , and no reported sales to consumers. Service Pack 3 is slightly different, in that it needs at least Service Pack 1 to have been installed, in order to update a live OS. It contained over minor, post-RTM bug fixes, along with all security patches released since the original release of XP.
SP1 also added USB 2. The most significant change on SP1 was the addition of Set Program Access and Defaults, a settings page which allows programs to be set as default for certain types of activities such as media players or web browsers and for access to bundled, Microsoft programs such as Internet Explorer or Windows Media Player to be disabled. This feature was added to comply with the settlement of United States v.
Service Pack 2 also added new security enhancements codenamed "Springboard" ,  which included a major revision to the included firewall renamed Windows Firewall, and now enabled by default , Data Execution Prevention gained hardware support in the NX bit that can stop some forms of buffer overflow attacks.
Raw socket support is removed which supposedly limits the damage done by zombie machines and the Windows Messenger service which had been abused to cause pop-up advertisements to be displayed as system messages without a web browser or any additional software became disabled by default. Additionally, security-related improvements were made to e-mail and web browsing. Service Pack 2 also added Security Center , an interface which provides a general overview of the system's security status, including the state of the firewall and automatic updates.
Third-party firewall and antivirus software can also be monitored from Security Center. This was done so that the browser would not violate a patent owned by Eolas. New features in Service Pack 3[ edit ] NX APIs for application developers to enable Data Execution Prevention for their code, independent of system-wide compatibility enforcement settings .