Enable or Disable Automatic Updates in Firefox

I don’t like Firefox constantly updating the version or the Add-ons all by itself  at startup without my knowledge. You can enable or disable automatic updates in Firefox with these steps.

From Firefox Menus

  1. Select the Menu button in the upper-right corner, then choose “Options“.
  2. Select “Advanced“.
  3. Choose the “Update” tab.
  4. Select on of the following options as desired:
    • Automatically install updates
    • Check for updates, but let me choose whether to install them
    • Never check for updates

From about:config Menu

  1. Type “about:config” in the address bar, then press “Enter“.
  2. Search for the “app.update.auto” setting.
  3. Double-click the “app.update.auto” option to toggle the setting. If set to “true“, automatic updates are enabled. If set to “false“, automatic updates are disabled.

Via prefs.js file

  1. Close Firefox.
  2. Navigate to the following location based on your operating system.
    • Windows XP/Vista/7/8 – “%APPDATA%\Mozilla\
    • Unix/Linux – “~/.mozilla/
    • Mac OS X – “~/Library/Mozilla/” or “~/Library/Application Support/
  3. Open the “Profiles” folder.
  4. Open the folder that represents the profile you would like to edit. The name of the folder will vary. It is usually a bunch of characters, followed by “.default”.
  5. Open the prefs.js file with a text editor like Notepad.
  6. Look for a line that contains “app.update.enabled”. If it doesn’t exist, add a line for it in the file and set it as desired using these examples:
    • user_pref(“app.update.enabled”, true); = Automatic updates enabled
    • user_pref(“app.update.enabled”, false); = Automatic updates disabled


  1. Emmar says

    The only way I found to stop the upgrading of Firefox is to download the version I want to use which is V 28, do a custom install to a private folder on your computer. Do not install maintenance. Leave the one they keep updating in programs. Delete the icon for the updated version and make a new one for the version you will be using. Works for me.

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