Impossible to delete cookies for individual Web sites

Turn Firefox 29 8.1 on windows 64-bit.

This arose because a particular Web site difficulties to set a cookie (I think) - FF gave the error that the site Web server was redirect the request in a way that could not be completed-, but with a warning that it could be caused by cookies are not allowed. So I tried to delete the cookie for this particular website, but FF seems not to comply. It is removed from the list of cookies in the dialog box and I can close the dialog box, but if I reopen it the cookie it shows always also present. Make a second time does not help.

I then found that this applies only to apply to a particular Web site, it is a Web site that stores a cookie. Cookies are set to be deleted when they expire that I find useful for some site store cookies (I can't find a white list that allows cookies deleted except those on the whitelist, this as opposed to the blacklist that prevent some websites from setting cookies at all).

I tried the following:
(1) open FF in safe mode, but I get the same result (cookie not deleted)
(2) with closed FF rename cookies.sqlite to the road. Then begins with a 'clean' cookie file, I always get the same result (cookie is not deleted).
I can confirm that the cookie is not removed by quickly opening the cookies.sqlite and by searching for the string of the Web site.

I tried to adjust FF cookie 'political' to remove all at the end of the session and that works - but it eliminates also the most useful as well. Someone at - it ideas?

Note that your list of details of the system shows that you have a user.js file in the profile folder to initialize prefs each time you start Firefox.

The user.js file is present than if you or another software has created this file and normally it wouldn't be here.
You can check its contents with a text editor (right click: open with) If you do not create this file yourself.

The user.js file is read whenever Firefox is started and initializes the preferences to the specified value in this file, so the preferences set via user.js can be changed temporarily for the current session.

Delete a possible user.js file and files numbered prefs-# .js and rename (or delete) the file prefs.js to reset all the prefs by default, including the prefs set via user.js and pref which is no longer supported in the current version of Firefox.

You can use this button to go to the Firefox profile folder currently in use:

  • Help > troubleshooting information > profile directory: see file (Linux: open the directory;) Mac: View in the Finder)

Tags: Firefox

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