U Block not working


I have been using u Block for almost a year now and today I noticed that it isn’t blocking any ads on my homepage. It is activated and still shows the number of ads blocked, but I still get ads where they weren’t there yesterday. Any thoughts?

(Martin Giger) #2

Is that just after starting Firefox? Because sometimes uBlock might not get a chance to block them, a solution is in the works afaik.


After and during. I will refresh my homepage and still won’t block ads. I even rebooted my PC to see if that would help, it didn’t.


Does this extension work with Firefox Quantum?

(Martin Giger) #5

https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/ works for sure (a fork of µBlock by the original author), I don’t think µBlock is still maintained (after it turned out that the maintainer was not nice or something).


So, after reinstalling u block, with your link, why are some adds still getting through? Not sure what went wrong with it, because a week ago it was blocking ALL adds.

(Scot Evanson) #7

Did you find a solution?

for me: 01-22-1018

UBlock started to block ability to use links from within Gmail

Quantum and latest Ublock

uninstall/reinstall Ublock fixed it


Hasn’t fixed my problem.


Had the same issue. Performed steps mentioned below fixed my issue.

  1. Removed Ublock first from - about:addons
  2. Quit Firefox, Make sure there is no Firefox.exe process running in the background!
  3. Type %appdata% in your windows explorer address bar & press Enter
  4. Navigate to “Mozilla\Firefox\Profiles\jbjocfsh.default\extensions” & DELETE the file name “uBlock0@raymondhill.net.xpi
  5. Start firefox, Install Ublock from : https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/