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Sometimes, changes made to preferences like toolbar settings and browser window size may not be remembered by Firefox. This article explains how to fix this.

In some instances, Firefox may not remember changes you've made to your toolbar settings or certain other configuration changes. {note}'''Note:''' If toolbars or toolbar items are missing, see [[What happened to the File, Edit, and View menus?]] and [[Navigation buttons like back, home, bookmarks and reload are missing]]. {/note} This article explains how to fix the underlying problem that may result in one or more of the following symptoms: * You have added, rearranged or removed buttons from your toolbar, but the changes are not saved when you restart Firefox. * You have resized or moved the browser window, but the new size and position are not remembered when you restart Firefox. * You cannot save new bookmarks. Here are two ways that you can solve the problem: = Solution 1: Delete xulstore.json file = You may have a corrupt '''xulstore.json''' file in your [[Profiles - Where Firefox stores your bookmarks, passwords and other user data|Firefox profile]]. You can delete this file so that Firefox can create a new one. #[[Template:OpenProfileFolder]] #Close Firefox:[[Template:closeFirefox]] #Locate and delete the file {filepath xulstore.json} (or rename it, for example, to ''xulstore.jsonOLD'', to keep the old file as a backup). #You can close the profile folder and open Firefox now. = Solution 2: Refresh Firefox = Firefox's [[Refresh Firefox - reset add-ons and settings|refresh feature]] will reset toolbar preferences and remove add-ons that could be interfering. [[T:resetnote]] [[T:resetsteps]]