My clients have a weird problem. About 3 weeks ago three of the four computers on their network suddenly stopped being able to use Bill Pay on their banking site. They can login and do normal banking ops, but when they click on Bill Bay, they get the Page Cannot Be Displayed error message. Two are WIndows XP Pro, the third is Windows 2000. I think they are set to recieve AUtomatic Updates, so I figured it had to do with that, but I can't find any reference to the problem anywhere. Lowering t he default security setting for Internet to Low and adding the site to the Trusted Sites both make no difference. The bank says it has not had anyone else complain of this that they know of, but they are escalating it.
The fourth computer, also WIndows XP Pro, is still able to do the Bill Pay function, so we assume it has nothing to do with the firewall (Cisco PIX).
Thanks for your ideas.