I have a Windows XP Service Pack 1 on my system. When I go to the main Reader page and click "Different System or Language", it doesn't even show Service Pack 1 as an option. I can't find an old version anywhere because the page won't allow me to select XP Service Pack 1 and everywhere claiming to have a download of older versions sends me to the new one. Where can I get an older version of Reader that will work with my system?
XP-SP1 and XP-SP2 are no longer supported by Microsoft, so software vendors do not specifically mention what versions will run on outdated operating systems. (You also will not get any security updates from Microsoft for these systems.)
My best guess is that Reader 9.x will install and run fine on your system, but why not update to XP-SP3, which will probably be supported for a few more years?