Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Cannot delete cookies

  • 3 replies
  • 41 have this problem
  • 2 views
  • Last reply by ddj0195

something12
something12
more options

I used to be able to delete cookies fine. Now when I go to "remove individual cookies" to see all of them I can't delete them. It seems that if I press "remove all cookies" they're gone, but when I click "remove individual cookies" again, there they are again. Also, if I try to delete a single cookie, it seems like it's deleted, but if I hold the "delete" button, the previously "deleted" cookie appears and disappears. And no matter what I do - individually delete them or not, when I click close and go back to see the cookies, nothing has changed.

Also, when I click "use custom settings for history" and only make exceptions for two sites NOT to set cookies, then click OK, then go back, I don't see "use custom settings for history", but "remember history".

The cookie-deleting problem is new, but the "custom settings" is older.

Thank you for your time. If I didn't make myself clear enough, feel free to ask me for more details.

I used to be able to delete cookies fine. Now when I go to "remove individual cookies" to see all of them I can't delete them. It seems that if I press "remove all cookies" they're gone, but when I click "remove individual cookies" again, there they are again. Also, if I try to delete a single cookie, it seems like it's deleted, but if I hold the "delete" button, the previously "deleted" cookie appears and disappears. And no matter what I do - individually delete them or not, when I click close and go back to see the cookies, nothing has changed. Also, when I click "use custom settings for history" and only make exceptions for two sites NOT to set cookies, then click OK, then go back, I don't see "use custom settings for history", but "remember history". The cookie-deleting problem is new, but the "custom settings" is older. Thank you for your time. If I didn't make myself clear enough, feel free to ask me for more details.

Modified by something12

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

That are most likely opt-out cookies added by the Beef Taco extension

Beef Taco (Targeted Advertising Cookie Opt-Out) :: Add-ons for Firefox

Sets permanent opt-out cookies to stop behavioral advertising by 102 different advertising networks, including Google, Yahoo, Microsoft, all members of the Network Advertising Initiative, and many other companies.
something12
something12 Question owner
more options

Thanks a lot. I uninstalled the extension and the cookies are gone. Opt-out cookies are cookies that basically disallow certain sites to set more cookies, right? So those cookies (there were hundreds) couldn't've been all opt-out, since I used a lot of sites which definitely used cookies. Also, I never got the hang of Beef Taco. When I click "Options" on the Add-on list, I have to check if I want to see some toolbar. I never found out where to set the opt-out cookies.

ddj0195
ddj0195
more options

Did you install Do Not Track+ ? This app works by setting hundreds of cookies that tell the cookie-recipient not to track this user. If you want to remove those "opt-out" cookies you have to disable DNT+. But if you enable DNT+ all those opt-out cookies will return. And yes, there are hundreds of them on the DNT+ list.