Both computer use OS High Sierra (10.13.6). This problem has not occurred after updating Firefox on my laptop Mac Book Pro. Deleting the preference file (pref.js) has made no difference. Not disable it, but completely remove it from Firefox. AdBlock Plus extension does not work after updating Firefox (to version 102.3.Oesr) on desktop MacPro. I need to know how to remove Ad Block Plus from Firefox. if i had a dual core or even a quad core Firefox would be maxing out the CPU. A browser shouldn't do this I have an AMD FX9590 8 core CUP running at 4.8 GHZ with a 5.0 Ghz boost. AdBlock is the most popular ad blocker for Google Chrome and Safari. Firefox attempts to speed up loading new websites by using DNS Prefetching, which can cause page load errors with some system configurations. Your browser should be configured to block pop-ups. when i start Firefox my CPU jumps up to around 68% and stays there some times going higher. Using adblock Plus and ublock origin at the same time does not cause a conflict that allows the ad to pass through both blockers. Firefox also uses a lot of my CPU and memory. There are a lot of webpages that do not display right. I'm seriously thinking about not using Firefox anymore because its way so slow and very hard to work with, the developers have hidden most all the settings, that used to be right there at hand. I also would like to know why Firefox is so slow, when it used to be lightning fast.

I can only find things about how to add it or disable it. I need to remove it, but I can't find anything about how to remove it. I have added ad block plus, It has stopped working. I stopped using Firefox back in 2009 because of crashing issues, but decided to give it another try.

Mozilla firefox adblock not working