Hi Gents I did upgrade my Linux Kali system after which Firefox was migrated to Firefox ESR. The problem is that browser do not show the content of web pages and services which I request. When I typed for example google.com address looks like it is resolved but I can see only white screen - other pages look the same. But I am able to open some pages which I bookmarked (I suppose they are cashed). I did check connectivity which is fine as I can play games and listen to web radio. I did try to reinstall client from system but when I typed into command prompt apt-get remove firefox I received information that firefox is not installed hence cannot be removed. Please find below information about my client Version 45.3.0 User Agent Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0