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<A NAME="top"><img src="winXP_logo_horiz_sm.gif" width="314" height="68" border="0" alt="Microsoft Windows XP"></A>
<H1> Microsoft Windows&nbsp;XP Home Edition, Windows&nbsp;XP Professional,<BR>
and Windows&nbsp;XP 64-Bit Edition<BR>
Readme for Service Pack&nbsp;1 (ReadMeSP.htm)</H1>
<HR>
<H4></H4>
<H4><A HREF="#1_0_introduction_rxmk">1.0 Introduction</A></H4>
<H5><A HREF="#1_1_list_of_fixes_satb">1.1 List of Fixes for Service Pack 1</A></H5>
<H5><A HREF="#1_2_key_points_to_remember_about_service pack_3_mpyg">1.2 Key Points to Remember About Service&nbsp;Pack 1</A></H5>
<H5><A HREF="#1_3_service_pack_cd_contents_thsv">1.3 CD Contents for Service Pack 1</A></H5>
<H5><A HREF="#1_4_service_pack_information_on_the_microsoft_windows xp_service pack_1_web_site_qvkt">1.4 Web Site Information for Service Pack 1</A></H5>
<H5><A HREF="#1_5_additional_windows_xp_service_pack_resources_ytna">1.5 Additional Resources for Service Pack 1</A></H5>
<H4><A HREF="#2_0_installing_the_service_pack_gaam">2.0 Installing Service Pack 1</A></H4>
<H5><A HREF="#2_1_before_you_install_the_service_pack_ulio">2.1 Before You Install Service Pack 1</A></H5>
<H5><A HREF="#2_2_determining_upgrade_options_uazo">2.2 Determining Upgrade Options</A></H5>
<H5><A HREF="#2_3_1_installing_service_pack_3_from_the_cd_zrjk">2.3 Installing Service Pack 1 from the CD</A></H5>
<H5><A HREF="#2_3_2_installing_service_pack_3_from_the_web_skov">2.4 Installing Service Pack 1 from the Web</A></H5>
<H4><A HREF="#3_0_removing_service_pack3_jtov">3.0 Removing Service Pack 1</A></H4>
<H4><A HREF="#5_0_copyright_wgba">4.0 Copyright</A></H4>
<BR><BR>
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<H1><A NAME="1_0_introduction_rxmk"></A> 1.0 Introduction</H1>
</TD>
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<HR>
<P>This Readme file provides important information about Microsoft&reg; Windows&reg;&nbsp;XP Service Pack&nbsp;1 (SP1) for Microsoft&reg; Windows&reg;&nbsp;XP Home Edition, Windows&reg;&nbsp;XP Professional, and Windows&reg;&nbsp;XP 64-Bit Edition. Read this file before you install SP1. This file explains how to install SP1, and provides specific information that might apply to your setup. </P>
<P>SP1 contains updates for the following areas of Windows&nbsp;XP functionality:</P>
<UL>
<LI>Security issues (including the Windows&nbsp;XP Update Package)</li>
<LI>Operating system reliability</li>
<LI>Application compatibility</li>
<LI>Windows&nbsp;XP Setup</li></UL>
<P>For information about installing SP1, see &quot;<A HREF="#2_0_installing_the_service_pack_gaam">Installing Service Pack&nbsp;1</A>&quot; later in this document. </P>
<P class="note">Note</P>
<P class="indent">If you have not yet installed the Windows&nbsp;XP Update Package, you only need to install SP1 because the security update is included. For further information about the Windows&nbsp;XP Update Package, see article <A HREF="http://go.microsoft.com/fwlink/?LinkId=8683" TARGET="_blank"><U>Q309521</U></A>, &quot;Windows&nbsp;XP Update Package, October 25, 2001,&quot; in the Microsoft Knowledge Base.</P>
<H2><A NAME="1_1_list_of_fixes_satb"></A> 1.1 List of Fixes for Service Pack 1</H2>
<P>To help you decide whether or not to upgrade to SP1, Microsoft provides extensive documentation on fixes available in SP1. For details about fixes included in this service pack, and for a list of files affected, see article <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8343" TARGET="_blank"><U>Q324720</U></A>, &quot;List of fixes in Windows&nbsp;XP Service Pack&nbsp;1,&quot; in the Microsoft Knowledge Base. This list of fixes is also available under <B>Learn More</B> on the <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A>.</P>
<H2><A NAME="1_2_key_points_to_remember_about_service pack_3_mpyg"></A> 1.2 Key Points to Remember About Service Pack&nbsp;1</H2>
<UL>
<LI>You must install SP1 while Windows&nbsp;XP is running.</li>
<LI>Although SP1 is not a required upgrade, this release includes fixes that might improve the way your programs run with Windows&nbsp;XP.</li>
<LI>Before you install SP1, see &quot;<A HREF="#2_1_before_you_install_the_service_pack_ulio">Before You Install Service Pack 1</A>&quot; later in this document. </li>
<LI>You cannot use Windows&nbsp;XP SP1 to upgrade Microsoft&reg; Windows&reg; Millennium&nbsp;Edition unless you create an integrated installation by combining the service pack with the original Windows&nbsp;XP product (this kind of installation is for advanced users only). For further information, see the <I>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Installation and Deployment Guide</I>.</li></UL>
<H2><A NAME="1_3_service_pack_cd_contents_thsv"></A> 1.3 CD Contents for Service Pack 1</H2>
<P>SP1 is available from the Windows&nbsp;XP SP1 CD, which includes:</P>
<UL>
<LI>XPsp1.exe, which contains the SP1 installation files. Advanced users and administrators can extract the files to complete specific tasks before installing the files. The <I>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Installation and Deployment Guide</I> provides information on how to do this. You will find this guide in the \Support\Tools folder on the SP1 CD (see SPDeploy.htm). You will also find a link to this guide under <B>Learn More</B> on the <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A> (see <B>Installation and Deployment Guide</B>).</li>
<LI>The <I>Microsoft Windows&nbsp;XP Hotfix Installation and Deployment Guide</I>, which provides instructions for installing hotfixes on multiple computers. You will find this guide in the \Support\Tools folder on the SP1 CD (see HFDeploy.htm). You will also find a link to this guide under <B>Learn More</B> on the <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A> (see <B>Hotfix Deployment Guide</B>).</li>
<LI>Additional tools for advanced users, support staff, and administrators. For more information, see the <I>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Installation and Deployment Guide.</I> You will find this guide in the \Support\Tools folder on the SP1 CD (see SPDeploy.htm), or see <B>Installation and Deployment Guide</B> under <B>Learn More</B> on the <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A>.</li></UL>
<H2><A NAME="1_4_service_pack_information_on_the_microsoft_windows xp_service pack_1_web_site_qvkt"></A> 1.4 Web Site Information for Service Pack 1</H2>
<P>The <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A> includes all of the items listed in the preceding section, &quot;<A HREF="#1_3_service_pack_cd_contents_thsv">CD Contents for Service Pack 1</A>.&quot; This Web site also provides a link from which you can install SP1.</P>
<UL>
<LI>If you have one computer running Windows&nbsp;XP and want to install SP1, the <B>Express installation</B> is recommended.</li>
<LI>If you have multiple computers to upgrade, the <B>Network installation</B> is recommended.</li></UL>
<P>Note that whichever type of installation you choose, the end result will be the same&mdash;upgrading to SP1.</P>
<P>For more information about each of these installation options, see &quot;<A HREF="#2_3_2_installing_service_pack_3_from_the_web_skov">Installing Service Pack&nbsp;1 from the Web</A>&quot; later in this document.</P>
<P>Check the space requirements for installing SP1 on your computer. See article <A HREF="http://go.microsoft.com/fwlink/?LinkId=8804" TARGET="_blank"><U>Q326583</U></A>, &quot;Hard Disk Space Requirements for Windows&nbsp;XP Service Pack&nbsp;1,&quot; in the Microsoft Knowledge Base.</P>
<H2><A NAME="1_5_additional_windows_xp_service_pack_resources_ytna"></A> 1.5 Additional Resources for Service Pack 1</H2>
<P>For additional information about Windows&nbsp;XP and this service pack, see the following resources:</P>
<UL>
<LI>The <A HREF="http://go.microsoft.com/fwlink/?LinkId=9325" TARGET="_blank"><U>Microsoft Windows Catalog Web site</U></A>, which provides the most up-to-date information about supported hardware and software products. </li>
<LI>The <A HREF="http://go.microsoft.com/fwlink/?LinkID=9326" TARGET="_blank"><U>Microsoft Knowledge Base</U></A>, which provides updated information about Windows&nbsp;XP. </li>
<LI>The <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A>, which includes links to the following SP1 resources, among others:
<UL>
<LI>The <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8343" TARGET="_blank"><U>list of fixes</U> </A></li>
<LI>The <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8675" TARGET="_blank"><U>release notes</U></A></li>
<LI>Deployment and support tools, security updates, and frequently asked questions</li></UL>
</li></UL>
<BR><BR>
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<H1><A NAME="2_0_installing_the_service_pack_gaam"></A> 2.0 Installing Service Pack 1</H1>
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<HR>
<P>You can install SP1 from the SP1 CD or from the <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A>. For information on installing SP1 from the CD, see &quot;<A HREF="#2_3_1_installing_service_pack_3_from_the_cd_zrjk">Installing Service Pack 1 from the CD</A>&quot; later in this document. For information on installing SP1 from the Web site, see &quot;<A HREF="#2_3_2_installing_service_pack_3_from_the_web_skov">Installing Service Pack 1 from the Web</A>.&quot; </P>
<P>Read these installation instructions carefully before you install SP1. Installation methods might have changed since the release of previous service packs.</P>
<P>Note that during the installation, backup files can be created automatically so that you can remove the service pack later if you want to (unless you specifically choose not to have these files generated). Microsoft recommends that you back up these files so that you can remove the service pack in the future if you want. </P>
<H2><A NAME="2_1_before_you_install_the_service_pack_ulio"></A> 2.1 Before You Install Service Pack 1</H2>
<P>You can install SP1 only on a computer that is running Windows&nbsp;XP, and you must be logged on to that computer as an administrator. </P>
<P class="note">Note</P>
<P class="indent">Other upgrade options are available for system administrators and advanced users as described in the <I>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Installation and Deployment Guide</I> (SPDeploy.htm).</P>
<P class="proclabel">To prepare for an SP1 installation</p>
<OL>
<LI>If you use Faster User Switching, make sure that all other users are logged off from the computer and that only you are logged on to the computer; you must be logged on as an administrator.</li>
<LI>In the event that the installation fails, you need to ensure that you get the most out of data recovery. On computers running Windows&nbsp;XP Professional, to maximize data retrieval, create an Automated System Recovery (ASR) before you begin installation. For detailed instructions, see &quot;To create an Automated System Recovery set using Backup&quot; or &quot;To recover from a system failure using Automated System Recovery&quot; in Windows&nbsp;XP <b>Help and Support Center</b>. </li>
<LI>Perform a full backup of the files that you keep on your computer. </li>
<LI>Stop any real-time virus checkers before you install SP1 because they might interfere with your installation. (Be sure to restart the virus checkers after you install SP1.)</li></OL>
<P>Check the space requirements for installing SP1 on your computer. See article <A HREF="http://go.microsoft.com/fwlink/?LinkId=8804" TARGET="_blank"><U>Q326583</U></A>, &quot;Hard Disk Space Requirements for Windows&nbsp;XP Service Pack&nbsp;1,&quot; in the Microsoft Knowledge Base.</P>
<P class="important">Important</P>
<P class="indent">Automated System Recovery (ASR) will not restore your data files. For more information, see &quot;Backing up files and folders,&quot; &quot;Restoring files and folders,&quot; and &quot;To create an Automated System Recovery set using Backup&quot; in the Windows&nbsp;XP <b>Help and Support Center</b>.</P>
<P class="caution">Caution</P>
<P class="indent">Before you begin the installation, remember to perform a complete back up of all your files on your computer and close all open programs.</P>
<H3><A NAME="exchange_messenger_users_gspn"></A> Exchange Messenger users</H3>
<P>Before you install this service pack, be sure to read article <A HREF="http://go.microsoft.com/fwlink/?LinkId=8675" TARGET="_blank"><U>Q324722</U></A>, &quot;Release Notes for Windows&nbsp;XP Service Pack&nbsp;1,&quot; in the Microsoft Knowledge Base. </P>
<H2><A NAME="2_2_determining_upgrade_options_uazo"></A> 2.2 Determining Upgrade Options</H2>
<P>Before you install SP1, find your Windows version in the following table to see whether you can upgrade your operating system to SP1. </P>
<P class="note">Note</P>
<P class="indent"><B>System administrators and advanced users</B>: This table applies only to update installations of SP1. You can integrate the service pack with Windows&nbsp;XP installation files and make more upgrade options available. These options are explained in the <I>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Installation and Deployment Guide</I> (see SPDeploy.htm on the SP1 CD), or see <B>Installation and Deployment Guide</B> under <B>Learn More</B> on the <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A>.</P>
<TABLE width="100%">
<tr><th align="left">Windows platform</th><th align="left">Supported for installations of Service Pack&nbsp;1</th></tr><tr><td>Microsoft Windows&nbsp;95</td><td>No</td></tr><tr><td>Microsoft Windows&nbsp;98</td><td>No</td></tr><tr><td>Microsoft Windows&nbsp;98 Second&nbsp;Edition</td><td>No</td></tr><tr><td>Microsoft Windows&nbsp;NT Workstation&nbsp;3.51</td><td>No</td></tr><tr><td>Microsoft Windows&nbsp;NT Workstation&nbsp;4.0 </td><td>No</td></tr><tr><td>Microsoft Windows&nbsp;Millennium&nbsp;Edition</td><td>No</td></tr><tr><td>Microsoft Windows&nbsp;2000&nbsp;Professional</td><td>No</td></tr><tr><td>Windows&nbsp;XP Home&nbsp;Edition</td><td>Yes</td></tr><tr><td>Windows&nbsp;XP Professional</td><td>Yes</td></tr><tr><td>Windows&nbsp;XP 64-Bit&nbsp;Edition</td><td>Yes</td></tr></TABLE><BR>
<H2><A NAME="2_3_1_installing_service_pack_3_from_the_cd_zrjk"></A> 2.3 Installing Service Pack 1 from the CD</H2>
<P>The following procedure explains how to install SP1 from the SP1 CD. </P>
<P class="proclabel">To install Service Pack&nbsp;1 from the CD</p>
<OL>
<LI>After you have stopped any real-time virus checkers, insert the SP1 CD into your CD-ROM drive.</li>
<LI>It might take a few moments for the installation to begin. If a Web page does <I>not</I> automatically open when you insert the CD, perform the following steps:
<OL>
<LI type=a>Click <B>Start</B>, and then click <B>Run</B>.</li>
<LI type=a>Type <B>&lt;D:&gt;XPsp1.exe</B> (where &lt;D:&gt; is the drive letter associated with your CD-ROM drive), and then press <B>ENTER</B>.</li></OL>
</li>
<LI>When the Web page appears, click the link to install SP1.</li>
<LI>If you are prompted to run XPsp1.exe or to save it to disk, click <B>Run this program from its current location</B>, and then click <B>Open</B>.</li>
<LI>Follow the instructions that are displayed in the Windows&nbsp;XP Service Pack&nbsp;1 Setup Wizard.</li>
<LI>If you do not want to create backup files, select the <B>Do Not Archive Files</B> option when it is displayed by the Windows&nbsp;XP Service Pack&nbsp;1 Setup Wizard.</li>
<LI>After the installation is complete, restart your computer, and then restart the virus checkers.</li></OL>
<H2><A NAME="2_3_2_installing_service_pack_3_from_the_web_skov"></A> 2.4 Installing Service Pack 1 from the Web</H2>
<P>The <A HREF=" http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A> offers two installation options for SP1:</P>
<UL>
<LI><B>The Express installation </B>
<P>The Express installation detects the service pack files that are already installed on your computer and installs only those files that need to be updated. If you choose to install the service pack from the Web site, the Express installation is recommended for users with one computer to upgrade. Installation types are discussed in detail on the <A HREF="http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A>. Using the Express installation can be significantly faster than downloading the Network installation.</P>
</li>
<LI><B>The Network installation</B>
<P>Using the Network installation option, you can download a self-extracting executable file (XPsp1.exe) that contains all of the SP1 files. This option is ideal for an administrator who wants to set up a shared network folder for deploying SP1 across a network. For more information about installing SP1 on multiple computers, see the <I>Microsoft Windows&nbsp;XP Service&nbsp;Pack 1 Installation and Deployment Guide.</I></P>
</li></UL>
<P class="note">Note</P>
<P class="indent">You cannot use the Express installation option to install SP1 on computers running Windows&nbsp;XP 64-Bit Edition.</P>
<P class="important">Important</P>
<P class="indent">During the download, make sure that you are downloading files from a Microsoft Web site.</P>
<P>Because downloading XPsp1.exe takes a substantial amount of time, you might want to save the file on your computer. This way, if you need to restart the installation or reinstall SP1, you will not need to download the file again. Because of the size of this file, if your computer has more than one hard disk, you should save XPsp1.exe on a disk other than your system disk. </P>
<P>See the <A HREF="http://go.microsoft.com/fwlink/?LinkId=8602" TARGET="_blank"><U>Microsoft Windows&nbsp;XP Service Pack&nbsp;1 Web site</U></A> for full instructions about completing the Express or Network installation.</P>
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<H1><A NAME="3_0_removing_service_pack3_jtov"></A> 3.0 Removing Service Pack 1</H1>
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href="#top">Back
to Top</A></TD></TR></TBODY></TABLE>
<HR>
<P>If you chose to create backup files when you installed SP1, you can use <B>Add or Remove Programs</B> to remove SP1 at any time and restore your computer to its previous state.</P>
<P class="proclabel">To remove Service Pack&nbsp;1 by using Add or Remove Programs</p>
<OL>
<LI>Click <B>Start</B>,<B> </B>and then click <B>Control Panel</B>. </li>
<LI>Click <B>Add or Remove Programs</B>, click <b>Windows&nbsp;XP Service Pack&nbsp;1</b>, and then click <B>Remove</B>. </li>
<LI>Follow the instructions that appear. </li></OL>
<P class="note">Note</P>
<P class="indent">If you choose to remove SP1, a dialog box displays a list of the applications that you installed after you installed SP1. If you continue with the removal, these applications might not work correctly. </P>
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<H1><A NAME="5_0_copyright_wgba"></A> 4.0 Copyright</H1>
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