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
- Select the Menu button in the upper-right corner, then choose “Options“.
- Select “Advanced“.
- Choose the “Update” tab.
- 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
- Type “about:config” in the address bar, then press “Enter“.
- Search for the “app.update.auto” setting.
- 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
- Close Firefox.
- Navigate to the following location based on your operating system.
- Windows XP/Vista/7/8/10 – “%APPDATA%\Mozilla\“
- Unix/Linux – “~/.mozilla/“
- Mac OS X – “~/Library/Mozilla/” or “~/Library/Application Support/“
- Open the “Profiles” folder.
- 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”.
- Open the prefs.js file with a text editor like Notepad.
- 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