This problem can sometimes be caused by disabling or refusing to accept cookies.

website for example like VK - https://vk.com i can't never sign in/log in.. it keeps telling me The page isn’t redirecting properly An error occurred during a connection to login.vk.ru. This problem can sometimes be caused by disabling or refusing to accept cookies. ----------- i tried to - delete cookies - delete history - add exception (vk.ru/vk.com) to Cookies and Site Data - private Mode - disable HTTPS-Only Mode - reinstall firefox but still like some other website the same problem.... plz help these websites work fine -- by using other Browsers i can login