Enable and disable cookies that websites use to track your preferences

Cookies are stored on your computer by websites you visit and contain information such as site preferences or login status. This article describes how to enable and disable cookies in Firefox.

How do I change cookie settings?

Firefox will display a lock icon with red strike-through in the address bar when a login page you’re viewing does not have a secure connection. This is to inform you that if you enter your password, it could be stolen by eavesdroppers and attackers.


Cookies are enabled by default in Firefox.

  1. Click the menu button Fx57Menu and choose Preferences.
  2. Select the Privacy & Security panel and go to the Cookies and Site Data section.
  3. Select Accept cookies and site data to enable cookies. To disable cookies, select Block cookies and site data and use the drop-down menu next to Type blocked to choose the type of cookies to block.
  4. 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.
      Firefox is closed: The cookies that are stored on your computer will be removed when Firefox is closed.
  5. Close the about:preferences page. Any changes you've made will automatically be saved.

Websites report errors

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

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