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How can I make Firefox NOT share cookies with MS Internet Explorer

  • 11 การตอบกลับ
  • 2 คนมีปัญหานี้
  • 22 ครั้งที่ดู
  • ตอบกลับล่าสุดโดย xaunloc

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I need to be able to run MSIE and Firefox either simultaneously or sequentially without the two browsers sharing cookies. I want each browser to be independent of the other

I need to be able to run MSIE and Firefox either simultaneously or sequentially without the two browsers sharing cookies. I want each browser to be independent of the other

การตอบกลับทั้งหมด (11)

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hello, firefox has its own cookie store and doesn't share cookies with IE - this might be different for flash cookies, but i don't know the details about those...

เปลี่ยนแปลงโดย philipp เมื่อ

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philipp said

hello, firefox has its own cookie store and doesn't share cookies with IE - this might be different for flash cookies, but i don't know the details about those...

Thank you BUT you are wrong. Firefox is absolutely sharing cookies with IE.

When I first noticed this I thought it might have been because when I first installed Firefox it asked if it should import bookmarks and other settings from Chrome OR from IE and I let it import from IE. Since then I have uninstalled and reinstalled Firefox, but that did not help.

If I used IE to go to any website that uses cookies (almost all do) then go to that site using Firefox, Firefox will immediately be logged in with the account that I used IE to sign in and vice versa. This is unacceptable for my use.

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you should clear your cookies then: Clear cookies and site data in Firefox

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It's probably a persistent cookie the site set in Firefox during a previous session (or a session cookie from a previous session if you automatically start Firefox with the windows and tabs from your previous session).

The safest way to end your session on any site is to use the site's Logout or Sign out link/button to end your session.

But let me mention two other thoughts:

  • Are you using any "IE Tab" extensions? (Not recommended) With any of those add-ons, you are actually using IE inside a Firefox tab, so you are using IE in both cases.
  • Some servers use Flash local storage objects (LSO's, sometimes called supercookies) to track you across browsers. But normally websites that store sensitive information want you to log in again when you visit with a different browser even if they suspect they know who you are.
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philipp said

you should clear your cookies then: Clear cookies and site data in Firefox

I don't want to clear all the cookies -- which plays hell with many of the websites that I use regularly.

The "clear your cookies" is a BS knee-jerk response favored by incompetent tech support reps for all sorts of problems -- occasionally it solves some problems, but it generally causes more trouble than it is worth.

AND, more importantly, it would do nothing to solve the issue of Firefox SHARING cookies with Microsoft Internet Explorer.

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I thank everyone who has tried to offer suggestions, but so far no one has addressed anything related to the issue at hand.

Yes, clearing all the cookies off the system would probably help ONCE, but it would wreak havoc with dozens of websites that I visit regularly and it would do nothing at all the solve the problem that Firefox is reading cookies left in IE and is storing its cookies where IE reads them.

One reason for using two different browsers simultaneously is to be able to log into different accounts on the same or related websites. For example, I should be able to log into Yahoo webmail under one Yahoo account with one browser and simultaneously log into Yahoo Groups under a different Yahoo account. I CAN do exactly that with Chrome and either FF or IE, because Chrome keeps its own cookies in its own location. But I can't to it with FF and IE because, for some reason, FireFox is apparently storing its cookies together with IE.

I can understand why some people might want to be able to do this, but I have a hard time believing that the developers of FireFox configured it so that there is no way to keep its cookies separate.

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i will repeat myself: firefox does not share or exchange its cookies with IE - they are stored in totally separate places fro both browsers. if you chose to import IE cookies in the import wizard during the first launch of firefox, this was a one-time import only and clearing the cookies (either all of them or selectively for sites where you don't want to use the imported cookies/logins) will resolve that.

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xaunloc said

...for some reason, FireFox is apparently storing its cookies together with IE.

That isn't how Firefox is designed. IE uses a folder on disk to store cookies and Firefox uses a database file named cookies.sqlite.

So unless your Firefox imports IE cookies every time you start up, which definitely is not normal, there's something else very odd going on.

What happens if you do this test:

(1) Log out of the site in Firefox and keep the tab open to the site (2) Log into the site in IE, which should save a cookie in IE (3) Reload the page in Firefox (Ctrl+r) and see whether you are now logged in under the same user as IE -- presumably not (4) Exit Firefox and start it up again and try the site to see whether you are now logged in under the same user as IE -- normally not

BTW, I'm assuming you disabled Firefox's Password Manager or simply did not save the login for this particular site/account. You can double-check here:

"3-bar" menu button (or Tools menu) > Options > Security

Uncheck the box for "Remember passwords for sites" or click the "Saved Passwords" button to make sure this site isn't in there.

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jscher2000 said

xaunloc said
...for some reason, FireFox is apparently storing its cookies together with IE.

That isn't how Firefox is designed. IE uses a folder on disk to store cookies and Firefox uses a database file named cookies.sqlite.

So unless your Firefox imports IE cookies every time you start up, which definitely is not normal, there's something else very odd going on.

What happens if you do this test:

(1) Log out of the site in Firefox and keep the tab open to the site (2) Log into the site in IE, which should save a cookie in IE (3) Reload the page in Firefox (Ctrl+r) and see whether you are now logged in under the same user as IE -- presumably not (4) Exit Firefox and start it up again and try the site to see whether you are now logged in under the same user as IE -- normally not

BTW, I'm assuming you disabled Firefox's Password Manager or simply did not save the login for this particular site/account. You can double-check here:

"3-bar" menu button (or Tools menu) > Options > Security

Uncheck the box for "Remember passwords for sites" or click the "Saved Passwords" button to make sure this site isn't in there.

Here's where it gets screwy....

I tried exactly the four steps listed on one site -- and it worked exactly as you described - which would be how I wanted.

I the repeated exactly the same steps on another site and it failed at step 3

- I logged out of the site in firefox and the site showed be logged out
- I logged in to the site with IE
- I refreshed the site in firefox and it immediately showed me as logged in with the ID that I used in IE

And, as an additional check, I opened the same site in Chrome and THAT shows me logged in with the last ID that I used on the site with Chrome so it is definitely not a case of the site reading my IP address.

It doesn't matter whether I log in with IE or FF, whichever I used to log in most recently is what the site shows BUT this occurs ONLY with IE and FF -- meanwhile if I go to the same site with Chrome it shows only whichever ID was last used IN CHROME regardless of what IE and FF are showing,

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For the site where you got the unexpected result, if you then log out in IE and reload the tab in Firefox, did logging out in IE log you out in Firefox as well?

I don't know how that could have gotten connected if you aren't using an "IE Tab" add-on for that site.

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jscher2000 said

For the site where you got the unexpected result, if you then log out in IE and reload the tab in Firefox, did logging out in IE log you out in Firefox as well? I don't know how that could have gotten connected if you aren't using an "IE Tab" add-on for that site.

Yep. If I am logged in with Firefox then open the site with IE it comes up logged in. If I then log out with IE and refresh Firefox, it shows me as logged out in firefox as well.

Beats the heck out of me