There is a way to disable updates by going through the Options menu but after disabling it through there, when you would go to Help > About Firefox, it would update regardless of that setting. 2 methods here, pick one. You can set these prefs in about:config to disable automatic updating: app.update.auto - false app.update.enabled - false app.update.silent - false Or you can use this method to do that for you: You can create a new file in a text editor (Defaults are: Notepad for Windows, TextEdit for Mac, and Text Editor on Linux) called user.js. When you save user.js, make sure it's file type is ALL FILES as leaving it like that will add the .txt extension (user.js.txt) and it won't work. Place this file in your Profile Folder. See the link below to learn how to access the folder How to find my profile Folder Once you're creating the folder simply add the following to your user.js file, save and close, restart Firefox // turn off application updates: user_pref("app.update.enabled", false);