As of this morning, none of my machines running NOD32 was able to access the Microsoft Update site, receiving this message: ============== Thank you for your interest in obtaining updates from our site. To use this site, you must be running Microsoft Internet Explorer 5 or later. To upgrade to the latest version of the browser, go to the Internet Explorer Downloads website. ============== Now that the problem has persisted for some hours, I began to be suspicious and tried a machine running Avira Pro. No problem there. Is anyone else experiencing this problem? It's occurred both on machines where Monday's emergency update has been applied, and another yet to be updated.