• Setting Firefox as the default browser is not working - What to do Learn how to set Firefox as the default browser if the setting is not working properly or has been changed by another program.
• Username and password are not remembered Firefox includes a password manager that can store the passwords you use to log into websites. This article describes why your passwords may not be saved.
• Thumbnails are missing on the New Tab page - how to get them back Find out why site images on the New Tab page may not be displayed and how to get them back. This article is for Firefox versions 56 and below.
• How to get back settings that aren't saved This article will tell you how to fix problems where Firefox can't save some or all of the settings you're trying to change.
• What to do if you can't download or save files If you can't download or save files using Firefox, this article will explain what steps to take to resolve the issue.
• Changes to toolbars and window sizes are not saved Sometimes changes you make to settings such as toolbar settings and browser window sizes may not be remembered by Firefox. This article explains how to fix it.
• Firefox does not save data entered into web forms. Firefox's AutoComplete feature allows you to remember and reuse text fields in web forms. If you can no longer autofill your forms, follow these instructions.
• Recovering Lost or Missing Bookmarks If your bookmarks are lost, they can be recovered. This article explains why bookmarks can get lost and how to get them back.
• The wrong home page opens when you launch Firefox - How to fix Some third-party software can change the browser shortcut so that their pages always open when you launch Firefox. Find out how to get it all back.

The Mozilla Firefox web browser has the function of storing input data from various Internet resources, as well as automatically filling it in the next time you visit these sites. This option is very convenient, especially for those who often visit Internet portals that require logging into an account. In this article we will try to figure out why the Firefox search engine does not remember passwords.

Firefox doesn't save password

The browser saves the username and password for accounts by default. If your Internet browser does not do this, it may have this useful feature disabled. To check this you need to do the following:

Launch the browser and open the settings menu (the icon in the upper right corner depicting three stripes located one below the other), then the “Settings” button;

On the left side of the window, select “Protection”. In the window that opens we see two sub-items “General” and “Logins”. In the “Logins” sub-item, check the box to the left of the “Remember logins for sites” property.

The browser never saves passwords and there is no autofill feature if you use the private browsing option. Windows in private browsing mode are marked with a mask icon located in the upper right part of the screen. To remember passwords, you must close all windows marked with this icon.

If your search engine is always running in private mode, there will be a shield icon to the left of the search bar.

In order to exit private browsing, you need to follow a few simple steps:

1. Open the Mozilla Firefox browser menu and select “Settings”;

2. On the left side of the settings menu, select the “Privacy” item, in the “History” sub-item, open Firefox and select the “will remember history” property, after which you should restart the browser for the settings to be activated.

If your Internet browser saves passwords, but not for all sites, then there may be two options:

1. The website is included in the exclusion list. To check this, you need to go to the Browser Menu-Settings-Protection-sub-item Logins and to the right of “Remember logins for sites” there is a button “Exceptions...” (it is active only if the box to remember logins is checked). When you click on this button, a window will open in which you can see for which websites you are prohibited from saving passwords.

If, after completing the above steps, your Internet browser does not offer to save your login and password when entering a certain Internet resource, then most likely the site has an active ban on saving passwords by the creator or moderator of the network element.

Those users who prefer to work in the Mozilla Firefox browser may encounter an unpleasant event. The program blocks downloaded content; in current downloads you can see the notification “This file is not usually downloaded.” Firefox does this for security reasons, suspecting that the downloaded file may contain malicious code if it is run.

Removing the blockage

This function mainly responds to executable files that have been modified or that have not been authenticated. A similar reaction has also been observed to file extensions .zip, .pdf and .docx, which may contain macros that can launch an unwanted executable .exe file.

Advice! If you are bothered by frequent notifications “your connection is not secure in Firefox,” you can figure it out and fix the problem yourself.

In settings

If you are sure that this file will not harm your computer, disable protection. In the search bar, enter about:preferences#security (Settings → Security) and uncheck “Warn about unwanted and unusual programs.”
Restart your browser and try again.

In configuration

You can disable it differently:

1. Enter about:config in the search bar

   and confirm “I accept the risk.”
   

2. In the search bar, enter browser.safebrowsing.malware.enabled

   

3. Do the same with the settings browser.safebrowsing.enabled browser.safebrowsing.downloads.enabled browser.safebrowsing.downloads.remote.enabled
4. Close service tabs and restart Mozilla Firefox. Check for the "this file is not typically downloaded" notification.

Sometimes, your Firefox preference settings may not be saved after you change them. For example, you may change a setting in your Firefox Options Preferences , only to have it set back to its previous value the next time you open the Options Preferences panel.

The possible causes and solutions vary depending on whether you are unable to save a few specific preferences or if no preferences are saved at all. This article may also apply if, after updating Firefox, a Firefox Updated tab opens to a page stating You've been updated to the latest version of Firefox every time you start Firefox.

Table of Contents

Refresh Firefox to fix the problem

The easiest way to solve this problem is to restore Firefox to its default state while saving your essential information. Besides resetting all preferences to default values, a Firefox refresh will also fix many other issues, including problems caused by extensions or with data and settings that are stored in other files in your Firefox . If you"d like to try a more precise fix, skip this section and try the solutions below.

Note: When using the refresh feature, your bookmarks, browsing history, open tabs, windows, passwords, cookies and web form auto-fill information will be saved. However, your extensions and themes will be removed and your preferences will be reset. Learn more.

Specific preferences are not saving

If a specific setting in Firefox keeps resetting or you are unable to change a single setting but other settings save correctly, you may have one of the following issues.

Third-party programs changing Firefox settings

Some programs force Firefox to use certain settings. Below is a list of programs known to do this and actions you can take to make them stop forcing Firefox settings:

• Creative ZenCast changes Firefox's user agent, interfering with Java.
  • Uninstall the program.
• McAfee Privacy Service turns Firefox's pop-up blocker off.
• Norton 360 includes a "Firefox Privacy Cleanup" feature that, if enabled, overrides your Firefox Privacy settings and prevents you from keeping your Browsing History, Cookies or other private data between sessions.

Some third-party toolbars and add-ons change Firefox's home page and search settings. You can quickly reset these with the SearchReset add-onTo reset these, see Change your default search settings in Firefox and How to set the home page .

• See Remove a toolbar that has taken over your Firefox search or home page for more information.

User.js file overriding Firefox settings

If you don"t have any of the above programs installed, or if If you followed the suggestions and certain settings change back each time you start Firefox, you may have to edit Firefox's configuration files yourself. Don't panic, it's pretty easy. Here's how to do it.

You should now be able to change your Firefox settings.

Firefox program file locks or prevents changes to certain settings

Your installation of Firefox may have been customized to add a program configuration file that locks certain settings or prevents certain changes from being saved. Follow the Reinstall Firefox step in the Troubleshoot and diagnose Firefox problems article to remove the Firefox program from your computer and then reinstall a new copy of Firefox. (Reinstalling Firefox this way will not remove your , since those are saved in a separate location from the program files.)

Unable to save any preferences or settings

If none of your settings will save, if you get the Firefox Updated tab every time you start Firefox, or if you have tried the steps above with no effect, the file which Firefox uses to save your preferences may be locked or corrupted.

Locked preferences file

Firefox may be unable to save your settings if the prefs.js file (or the prefs.js.moztmp file, if it exists) is write-protected or there are other prefs backup files.

Corrupt preferences file

The preferences file may be corrupt, preventing Firefox from writing to it. If you delete this file, Firefox will automatically create another one when it needs to. Here's how to delete the prefs.js file.

This will remove all your custom settings and settings for many extensions.