Please help. Over a month ago that Firefox Portable blocks some known websites that are supposed to be legitimate (Google, Yahoo, Facebook). Disabling the antivirus the problem goes away, but when you activate the antivirus again the problem returns.
Some samples of what I mean:
What is this? Can my network has been attacked and are trying to impersonate legitimate sites with false sites? What should I do to fix it?
PD.- Sorry for bad grammar, my language is Spanish and I only know very little English. The text was translated with Google Translate.
Here is what I recommend: A. Go to Start > and open a Command prompt window. (either Start> Run > type CMD and press Enter or Start>> type CMD and press Enter ). In this window, type “ipconfig /flushdns” and again close the browser. B. Right click the Network connection icon in the lower right corner of the screen (Wireless or Lan) > Open Network and Sharing Center. Click on the Ethernet or Wireless connection (depending which one you are using). . In the new Window press Properties> Locate Internet Protocol version 4 (IPv4) and after selecting it, press Properties. Set the DNS to the google public DNS as 22.214.171.124 and 126.96.36.199 and check Validate settings upon exit. C. Open the browser once more and see if the issue persists.