To download Adobe Acrobat Reader for Windows XP, go to Adobe.com, and click the three horizontal lines next to the Menu option near the top-right corner of the page. From the drop-down menu, select Acrobat Reader DC. On the new page, click the System Requirements link to check whether your computer is compatible with the selected software. Click on the link located under Your System, select Windows XP on the new page, and then click the Download Now button.
To choose an operating system, go to the left-hand side of the Adobe Acrobat Reader page, and then click the down-facing arrow under Step 1. Select Windows XP from the list, and select a language from the next drop-down menu. Select a software version from the list provided under Step 3, and then click the Download Now button located at the bottom-right corner of the page to download the selected file.
After downloading Adobe Acrobat Reader, go to the Downloads folder of your computer, and locate the Adobe Acrobat Reader installer file. Double-click on the installer file to launch the installation wizard. Click Run on the new window if prompted, click Yes on the User Account Control window, and then follow the on-screen instructions to install.