This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Why did Adblock suddenly stop working in firefox and firefox won't let me reinstall or re-download it?

  • 1 antwoord
  • 1 het hierdie probleem
  • 6 views
  • Laaste antwoord deur philipp

more options

Yesterday, May 3, 2019, adblock just suddenly stopped working. No warning, no pop-up message, just in the middle of watching a YouTube video and I was interrupted by an ad and that how I noticed. It was working fine up until then (wasn't the first video I'd watched that day, for example). Firefox wouldn't let me re-enable it for no given reason, wouldn't let me reinstall it (said it was somehow "corrupt"), and won't let me re-download it (gives me some B.S. about having to "check my connection").

What's going on and how do I fix it?

Yesterday, May 3, 2019, adblock just suddenly stopped working. No warning, no pop-up message, just in the middle of watching a YouTube video and I was interrupted by an ad and that how I noticed. It was working fine up until then (wasn't the first video I'd watched that day, for example). Firefox wouldn't let me re-enable it for no given reason, wouldn't let me reinstall it (said it was somehow "corrupt"), and won't let me re-download it (gives me some B.S. about having to "check my connection"). What's going on and how do I fix it?

All Replies (1)

more options

hi phow, this is/was caused by an unforseen technical problem unfortunately (an expired certificate used in the process of verifying addon signatures).

a fix for this is already being rolled out - for details, please see: https://blog.mozilla.org/addons/2019/05/04/update-regarding-add-ons-in-firefox/