I am using Firefox-ESR on my Kali linux distro. I am unable to load any webpages on Firefox but other browsers can load. I tried all the steps like clearing every history, cache, etc. I have even reinstalled several times but it is only loads for 2-3 seconds and shows a white blank page and nothing else. I have gone through your tutorial of "Firefox can't load but other browsers can" but it is not helping. There is no problem of proxy either.

Edit Update : I need the Firefox-ESR installed as default. I downloaded new version Firefox-ESR=78.11.0esr from Firefox download page and it loads webpages. But the latest Firefox downloaded from apt is Firefox-ESR=78.10.0esr. I cannot update Firefox as new downloaded version has executable file name as 'firefox' but default has executable file as 'firefox-esr' in '/usr/lib'. I have two different versions of Firefox-ESR installed now because of the installation procedure given in Firefox install tutorial page. I am also not able to find the new version browser in 'x-www-browser' in 'update-alternatives' to set it as default. I want the Firefox installed with all features as default one. I think I have not installed new version of Firefox-ESR correctly. I just want to update Firefox but not to install another version of it. Thank you.