Hello MMarshall1026, see if your firewall blocks firefox installation, try one more time from: http://www.mozilla.org/en-US/firefox/all/ make sure you have sp2 and above in your xp thank you

Still didn't work. I think i may be running a limited version of windows XP. Is there any way around this? Thanks.

Unfortunately no. [http://www.mozilla.org/en-US/firefox/12.0/system-requirements/ Firefox 12.0] is the latest version for limited xp or with sp1, and it is unsupported and vulnerable. see : [http://www.mozilla.org/en-US/firefox/20.0.1/system-requirements/ Firefox 20 System Requirements] only xp with sp2 supported. see also the : '''Do not install Firefox using a limited Windows XP account.''' in the next link : [https://support.mozilla.org/en-US/kb/install-firefox-windows Install Firefox on Windows] sorry, you need to update the os to use firefox ! thank you