Cookies are stored on your computer by websites you visit and contain information such as site​ pref​eren​ces ​or logi​n stat​us. This article describes how to enable and disable cookies in Firefox.

How do I change Cookie settings?

To check or change your settings:

1. At the top of the Firefox window, click on the Firefox button (Tools menu in Windows XP) and then click OptionsOn the menu bar, click on the Firefox menu and select Preferences...At the top of the Firefox window, click on the Edit menu and select PreferencesAt the top of the Firefox window, click on the Tools menu and select Options...On the menu bar, click on the Firefox menu and select Preferences...At the top of the Firefox window, click on the Edit menu and select Preferences...

2. Select the Privacy panel.

3. Set Firefox will: to Use custom settings for history.
   
   
   
4. Check mark Accept cookies from sites to enable Cookies, and uncheck it to disable them.
   
   
   
   
   
   
   • If you are troubleshooting problems with cookies, make sure Accept third party cookies is also check marked. For more information, see Disabling third party cookies.
5. Choose how long cookies are allowed to be stored:
   • Keep until: they expire: Each cookie will be removed when it reaches its expiration date, which is set by the site that sent the cookie.
   • Keep until: I close Firefox: The cookies that are stored on your computer will be removed when Firefox is closed.
   • Keep until: ask me every time: Displays an alert every time a website tries to send a cookie, and asks you whether or not you want to store it.
6. Click OK to close the Options windowClick Close to close the Preferences windowClose the Preferences window

Websites report cookie errors

If a website gives you an error message saying that you cannot accept cookies, see Websites say cookies are blocked.