I don't recommend ignoring a Security Warning - Unknown Publisher when you visit a website. Perform this task if you only knew the website, a good example is the administrator or webmaster forgot to update the digital certificate of their website. Now you are getting the unknown publisher error when you visit the website. Here's how to fix this issue : Visit the website again, ignore the existing error. In IE 7.0 or later, click on Tools, Internet Options. In Internet Options, click on Security tab. In Security, click on Local Intranet, then Sites In Local Intranet, the " Automatically detect intranet network " is checked. Uncheck it, click OK In Internet Options, click OK Now try the website again, it should work for you. Share your thought, join our group here: http://www.RandomPage.com/Group/Help and http://www.RandomPage.com/Group/Technology