Third-party cookies are automatically enabling after I have disabled them. Virus?

Though I normally run Firefox on private mode, and do accept cookies but never from third parties, I seem to have somehow ended up with a virus or something that automatically changes these settings every time I use Firefox. No matter how often I uncheck the box next to 'accept third party cookies' and click 'okay' the next time I go into the privacy setting box it will be checked again. How do I fix this???

This issue can be caused by an extension that isn't working properly.
Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
If settings change after closing and restarting Firefox then see:
*http://kb.mozillazine.org/Preferences_not_saved

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Hello fisherman66,
Firefox usually doesn't block pop-ups, especially if you allow them, but extensions and some security software can block pop-ups.
Start Firefox in [[Safe Mode|Safe Mode]] to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
*Do not click the Reset button on the Safe mode start window or otherwise make changes.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Why am I getting redirected to the MSN homepage (when logging out of hotmail) with third party cookies not enabled? And why are exceptions to cookies being cleared in private browsing mode?

I have the latest version of Firefox, I use Private browsing with Allow cookies but not third party cookies. Recently I have begun to be redirected to the MSN homepage after logging out of hotmail and whenever I add MSN cookies to the exceptions in cookies the list gets deleted. Can anyone tell me why, when blocking third party cookies should prevent that?

Two initial thoughts:
(1) If you look at the cookie names and content in the View Cookies dialog, are they the ordinary scramble of different names and values, or do they look like "opt-out" cookies? Some security software or add-ons may restore opt-out cookies after you clear them.
(2) If you have any extensions that make requests to those sites, it's possible they are bypassing private browsing mode, although I would hope not. Hmmm.
Unfortunately, unlike history where you can see the time that an entry was added, it is difficult to figure out when a cookie was set. But there are many cookie add-ons that might provide insight.
Alternately, you could go directly to the cookies.sqlite database using the SQLite Manager extension. This is on the nerdy side, but manageable.
(1) Install SQLite Manager from: https://addons.mozilla.org/firefox/addon/sqlite-manager/
(2) The extension adds an item to the Tools menu. If you do not normally use the classic menu bar, tap the Alt key to display it temporarily or press Alt+t to pull down the Tools menu.
SQLite Manager may suggest a particular database, particularly on your second and later uses. You can skip that and it will open a new window.
(3) On the toolbar (first screen shot), choose the cookies.sqlite database and click Go. This should display the database entries for all your cookies (second screen shot).
(4) Select the following SQL query text:
SELECT host AS Site, datetime(creationTime/1000000,'unixepoch') AS Created, datetime(expiry,'unixepoch') AS Expires
FROM moz_cookies
ORDER BY creationTime, host
(5) Click the Execute SQL tab, paste the query, then click Run SQL. You should get a list of sites in order by the date their cookies were set (third screen shot).
Are the dates all fresh? If they are older, something may be rolling back your cookie clearing.

Third-party cookies: Should I be concerned that I am forced to accept in order to access a site, if I delete them after every Firefox session?

Friday 16 August, 2012
My internet service provider (https://my.gci.net/) blocks my entry to eMailGuard (a GCI spam and virus isolator) when I have third-party cookies disabled
When I allow third-party cookies I am able to access eMailGuard. I have used GCI eMailGuard and Firefox together for years and have had no such difficulty in the past.
This problem commenced 2-3 weeks ago.
I have followed all directions at http://support.mozilla.org/en-US/kb/websites-say-cookies-are-blocked-unblock-them to clear all cookies and cache, with no change. Also, my default setting (see below) is to “Clear history when Firefox closes.” If I understand correctly, clearing history will also clear cookies and cache, so I do it every time I close Firefox.
Has Firefox changed third-party cookies parameters recently? GCI of course claims this is a browser issue. Should I be concerned about third-party cookies if I delete them after every Firefox session? Any comments or thoughts are greatly appreciated.
My current version is Firefox v.14.0.1
My Privacy settings are:
• Tools\Options\Privacy
• Use custom settings for history
My selected (checked) custom settings are as follows:
• Remember my browsing history
• Remember download history
• Remember search and form history
• Accept cookies from sites (third-party cookies not selected)
• Keep until: I close Firefox
• Clear history when Firefox closes
Thanks,
James Lavery
Anchorage, Alaska
ISP my.GCI.net

''Keep until: I close Firefox''
That's what I use for all cookies. If you start a new session every time you start Firefox, i.e., you don't resume the same session over and over, websites cannot track you 'across sessions' using cookies; you are a new person to them during each session (unless/until you log in).
Note that "Flash cookies" need to be managed separately.
As for this particular site, if you want to spend some time research it, you could install an add-on such as Firebug or the external Fiddler2 proxy. Both will show you each request made by the browser when you load a page. Then you can see which third party sites are involved and if you like make a specific entry to allow them in the Exceptions dialog.
* https://addons.mozilla.org/en-US/firefox/addon/firebug/
* http://www.fiddler2.com/fiddler2/ (more difficult to use for HTTPS sessions)

Cookies turned off and cleared, but 3rd party cookies are still being shared after Firefox v16.0.1 update

after firefox updated from v15.0.1 to v16.0.1 on Friday (10/19/12), collusion v0.22 shows 3rd party cookies being shared, and a lot of them. I have firefox in "always use private browsing mode", with cookies not allowed, in addition there are no entries in "exception" or in "show cookies". The check boxes for cookies and 3rd party cookies are NOT checked.
This behavior never happened before the update!
I re-installed v15.0.1, but it is still happening.
Rana full sys scan with the latest Norton Security, which found nothing. Tried a few others too, so I'm semi-certain that my system is not infected.
System: Acer 5251-1245 with windows 7 (current patch levels up to date).
What changed with v16.0.1 update? Did Collusion change?
why are 3rd party cookies being shared, and how is it doing it?
Is there a way to check to see if other browsers have the same issues? e.g. chrome, explorer (yuck!), safari, etc....
I've really liked Firefox, but I am afraid to use it, especially to shop online or any financial stuff (banks, credit card payments, etc.).
Maybe I was better off in blissful ignorance before installing collusion earlier this year, but I only ever saw the 3rd party cookie sharing when I had "cookies" turned on without turning on "Accept third-party cookies".
Again, what changed?

only add-on extensions are "Collusion v0.22" and "Adblock Plus Pop-up Addon v0.4".
The issue never happened until Friday 10/19/12 after the Firefox v16.0.1 update, and was noticed by me on Saturday while using the Firefox to check my work schedule (which sets only its cookie and does not share, but it did and got me worried).
Still wondering if Collusion updated too, and now I'm seeing new behavior.
I do not want to share cookies, which is why I turn them off, and never turn on "share third party cookies".
Do I need to stop using Firefox? :(

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Hi Everyone,
I am trying to complete my homework on the My Math Lab website, and this is the message that I keep getting, "You don't have a subscription to this site. Please make sure that the siteid or abbrev is correct. If you are accessing this site from Pearson MyLab / Mastering, make sure your browser settings allow all third party cookies." Is any able to help?
Thanks

Safari - Preferences - Privacy - Block Cookies : Never
should enable 3rd party cookies, although you might also disable any Safari extensions, in case that's a problem.
Safari 6 (OS X Mountain Lion): Manage cookies
Failing that, remove any existing cookies for them, via Cookies & other website data - Details...
& if still an issue - try another browser to see if that allows the site to work.

Facebook does not update "likes," that people "like," after setting Facebook to an exception for "Third Party Cookies"

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'''Try the Firefox Safe Mode''' to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.''
''(If you're not using it, switch to the Default theme.)''
* You can open the Firefox 4.0+ Safe Mode by holding the '''Shift''' key when you use the Firefox desktop or Start menu shortcut.
* Or use the Help menu item and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Don't select anything right now, just use "'Start in Safe Mode"''
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again.''
'''''If it is good in the Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one.
Please follow the [[Troubleshooting extensions and themes]] article for that.
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''

I have cleared my history, have enabled cookies and third party cookies on Firefox as directed, yet, google will not show my calendar.

When logged into gmail I cannot view CALENDAR. I have cleared my history and have both COOKIES and THIRD PARTY COOKIES enabled as directed.

Only when i go to a different browser (like IE) after i clear it , then all that shows up is the pages i visited in IE , that is what bugs me , why is IE browsing history sowing up in Firefox ??
Basically , i can clear the history in Firefox , and then for a example , go to Craigslist , using IE7 (launching it from a complete different Icon , in other words at that time i never open Firefox) , then after closing out , or even leaving open as it does not seem to matter , i go into Firefox , and hit History , and there is every place i visited in IE7 , on my History in Firefox

Since I installed the new version 17.0.1, third party cookies will not stay selected after I close the browser...

Simply -- third party cookies will not stay selected after closing the browser and I have to select it for each time to use certain cookies from websites...

You may need to create an allow exception to keep specific cookies.
*http://kb.mozillazine.org/Cookies
In case you are using "Clear history when Firefox closes":
*do not clear the "Cookies" and the "Site Preferences"
*Tools > Options > Privacy: History: [X] Clear history when Firefox closes > Settings
*https://support.mozilla.org/kb/Clear+Recent+History
Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords.

How do I enable third party cookies in Firefox 5

I keep getting the message telling me to enable third party cookies. The instructions for how to do so tell me to choose the options feature from the tools drop down menu, then to click on "privacy" and check a certain box that would enable cookies.
This check box is not on the privacy menu. What do I do?

Using the Menu Bar:
*press the ALT or F10 key to get the Menu Bar to '''''temporarily''''' appear
*with your mouse make the selection Tools > Options > Privacy
Using the Firefox button (Firefox 4 & 5):
*click the Firefox button > Options > Options > Privacy
To see the third-party cookies option, at the top of the Privacy panel set "Firefox will" to "Use custom settings for history"
See [https://support.mozilla.com/en-US/kb/Options%20window%20-%20Privacy%20panel Options window - Privacy panel]
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''

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COOKIE_DOMAIN=.hackers
I think this is the problem. .hackers is no valid cookie domain. You have to use something like:
.xy.ab
(two points)
I fear it is not possible to correct this easiely. First change the hostname to something allowed e.g. hackers.com
Then open an ldap browser and edit ou=iplanetamplatformservice,ou=services,dc=hackers
There is an entry with an xml. Copy the xml to an editor, search for .hackers, change it to a valid domainname.
Im not sure if a restart of the webserver is necessary here.
Another idea: You could also try to set the cookie domain to solnce.hackers, maybe this is accepted, even if it is not a cookie domain. But I dont know if this works...
hth
Chris

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