The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the web site owners to inform them of this problem.

From I would say a few days(can't remember the exact date, if on that date was some update) I can't display certain websites. Website I'm trying to go to displays a white background with a text [code]Secure Connection Failed The connection to the server was reset while the page was loading. The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the web site owners to inform them of this problem. [/code] It wasn't happening before. I do have KIS(Kaspersky Internet security) and when I just "disable" protection, the problem exists. But if I exit KIS all together, only then I can display the websites. It happens on the website of my bank, websites that have html5 videos embedded on them, now I tried to open simple website of Pushbullet(which is Firefox extension) and the website couldn't be displayed. However, the same websites that can't be accessed with Firefox, I can freely go to them on IE. Even with my KIS working. So what's going on here? Why suddenly webpages stopped displaying on firefox? As I've said, it didn't happen before. Suplement: I even tried to remove all cookies and web history. It work but only for one day. After Firefox displayed website of my bank, website was not accessible next time. I've tried to uninstall Firefox, delete manually all the mozilla folders from my HDD and install it again. It didn't worked:( What's the solution then? I don't want to be online with KIS tottaly disabled.