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Repair or tune up Firefox by restoring it to default settings while saving essential data. This can fix slowness, crashing, search hijacking and other problems.

{for not fx35} If you're having problems with Firefox, resetting it can help. The reset feature fixes many issues by restoring Firefox to its default state while saving your essential information like bookmarks, passwords, and open tabs. {/for} {for fx35} If you're having problems with Firefox, refreshing it can help. The refresh feature fixes many issues by restoring Firefox to its default state while saving your essential information like bookmarks, passwords, and open tabs. {/for} __TOC__ {for not fx35} = Reset Firefox to its default state = [[T:resetsteps]] = What does the reset feature do? = All of your Firefox settings and personal information are stored in a [[Profiles - Where Firefox stores your bookmarks, passwords and other user data|profile folder]]. The reset feature works by creating a new profile folder for you while saving your important data. Add-ons normally stored inside the Firefox profile folder, such as [https://addons.mozilla.org/firefox/extensions/ extensions] and [[Use themes to change the look of Firefox|themes]], will be removed. Add-ons stored in other locations, such as [[Use plugins to play audio, video, games and more |plugins]], will not be removed but any modified preferences (such as plugins you have disabled) will be reset. {/for} {for fx35} = Refresh Firefox = [[T:resetsteps]] = What does the refresh feature do? = All of your Firefox settings and personal information are stored in a [[Profiles - Where Firefox stores your bookmarks, passwords and other user data|profile folder]]. The refresh feature works by creating a new profile folder for you while saving your important data. Add-ons normally stored inside the Firefox profile folder, such as [https://addons.mozilla.org/firefox/extensions/ extensions] and [[Use themes to change the look of Firefox|themes]], will be removed. Add-ons stored in other locations, such as [[Use plugins to play audio, video, games and more |plugins]], will not be removed but any modified preferences (such as plugins you have disabled) will be reset. {/for} {/for} '''Firefox will save these items:''' {for not fx23} *Bookmarks *Browsing history *Passwords *Cookies *Web form auto-fill information {/for} {for =fx23,=fx24} *Bookmarks *Browsing history *Passwords *Cookies *Web form auto-fill information *Personal dictionary {/for} {for fx25} *Bookmarks *Browsing history *Passwords *Open windows, tabs and tab groups *Cookies *Web form auto-fill information *Personal dictionary {/for} '''These items and settings will be removed''': {for not fx18} *Open tabs, windows, tab groups, [[Find and install add-ons to add features to Firefox|extensions and themes]], [[Permissions Manager - Give certain websites the ability to store passwords, set cookies and more|website permissions]], modified preferences, personal dictionary, [[Search bar - Easily choose your favorite search engine#w_add-a-search-engine|added search engines]], [[Find and manage downloaded files|download history]], DOM storage, [[Advanced panel - Accessibility, browsing, network, updates, and other advanced settings in Firefox#w_certificates-tab|security settings]], [[Change what Firefox does when you click on or download a file|download actions]], plugin settings, [[Customize Firefox controls, buttons and toolbars|toolbar customizations]], and user styles will be removed. {/for} {for =fx18,=fx19,=fx20} *Open tabs, windows, tab groups, [[Find and install add-ons to add features to Firefox|extensions and themes]], [[Permissions Manager - Give certain websites the ability to store passwords, set cookies and more|website permissions]], modified preferences, personal dictionary, [[Search bar - Easily choose your favorite search engine#w_add-a-search-engine|added search engines]], [[Find and manage downloaded files|download history]], DOM storage, [[Advanced panel - Accessibility, browsing, network, updates, and other advanced settings in Firefox#w_certificates-tab|security settings]], [[Change what Firefox does when you click on or download a file|download actions]], plugin settings, [[Customize Firefox controls, buttons and toolbars|toolbar customizations]], user styles and [[How does Facebook Messenger for Firefox work?|Facebook Messenger for Firefox]] will be removed. {/for} {for =fx21,=fx22} *Open tabs, windows, tab groups, [[Find and install add-ons to add features to Firefox|extensions and themes]], [[Permissions Manager - Give certain websites the ability to store passwords, set cookies and more|website permissions]], modified preferences, personal dictionary, [[Search bar - Easily choose your favorite search engine#w_add-a-search-engine|added search engines]], [[Find and manage downloaded files|download history]], DOM storage, [[Advanced panel - Accessibility, browsing, network, updates, and other advanced settings in Firefox#w_certificates-tab|security settings]], [[Change what Firefox does when you click on or download a file|download actions]], plugin settings, [[Customize Firefox controls, buttons and toolbars|toolbar customizations]], user styles and [[Use Firefox Services to add social features to your browser|social features]] will be removed. {/for} {for =fx23,=fx24} *Open tabs, windows, tab groups, [[Find and install add-ons to add features to Firefox|extensions and themes]], [[Permissions Manager - Give certain websites the ability to store passwords, set cookies and more|website permissions]], modified preferences, [[Search bar - Easily choose your favorite search engine#w_add-a-search-engine|added search engines]], [[Find and manage downloaded files|download history]], DOM storage, [[Advanced panel - Accessibility, browsing, network, updates, and other advanced settings in Firefox#w_certificates-tab|security settings]], [[Change what Firefox does when you click on or download a file|download actions]], plugin settings, [[Customize Firefox controls, buttons and toolbars|toolbar customizations]], user styles and [[Use Firefox Services to add social features to your browser|social features]] will be removed. {/for} {for fx25} *[[Find and install add-ons to add features to Firefox|Extensions and themes]], [[Permissions Manager - Give certain websites the ability to store passwords, set cookies and more|website permissions]], modified preferences, [[Search bar - Easily choose your favorite search engine#w_add-a-search-engine|added search engines]], [[Find and manage downloaded files|download history]], DOM storage, [[Advanced panel - Accessibility, browsing, network, updates, and other advanced settings in Firefox#w_certificates-tab|security settings]], [[Change what Firefox does when you click on or download a file|download actions]], plugin settings, [[Customize Firefox controls, buttons and toolbars|toolbar customizations]], user styles and [[Use Firefox Services to add social features to your browser|social features]] will be removed. {/for} {note}'''Note:''' Your old Firefox profile will be placed on your desktop in a folder named "Old Firefox Data." If the reset didn't fix your problem you can restore some of the information not saved by [[Recovering important data from an old profile#w_copying-files-between-profile-folders|copying files to the new profile that was created]]. If you don't need this folder any longer, you should delete it as it contains sensitive information.{/note}