HTTP traffic not working, but HTTPS does in Windows XP

I have a computer with Windows XP SP3 that HTTP traffic will not work on.  I can ping any website and get a response.  HTTPS traffic (HTTPS:// works fine.  I have used IE and Firefox.  I repaired the Windows installation and that did not fix the issue.  I found a similar post to this, except it is for Windows 2003 Server.
Can anyone provide any insight?
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Do you have any firewalls enabled? Any other security programs (AVG, Norton, ZoneAlarm, whatever)? Sounds like ports 80 (and maybe 8080) closed (depending on how you open the sites). Had http ever worked? If so - what changed?

Are you able to telnet to port 80 on the http sites (this will kinda prove if it is the browser or something in front of it)?

PS: has a lot of possible reasons described... in case something rings a bell. if not - we will find out what blocks it I hope.

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norwoodhelpdeskAuthor Commented:
My antivirus was blocking it.  Once I disabled that, it worked.  Thanks for the help.
Just posting the graing comment as it is visible only to me and the Asker now:
"My antivirus was blocking it. Once I disabled that, it worked. Thanks for the help."

Good. You might want to read through the AV documentation how to make it allowed through it while still having the AV working.
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HTTP Protocol

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