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Jul 17, 2012. Firefox is more than a browser. Learn more about Firefox products that handle your data with respect and are built for privacy anywhere you go online.
Firefox Release Notes
v.5.0, offered to release channel users on June 21st, 2011 Check out what’s new, the known issues and frequently asked questions about the latest released version of Firefox. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.
What’s New in Firefox
The latest version of Firefox has the following changes:
Please see the complete list of changes in this version. You may also be interested in the list of changes in the previous version.
System Requirements
Before installing, make sure your computer meets the system requirements.
DownloadingMozilla Firefox Download For Pc Windows 10![]()
Mozilla provides Firefox for Windows, Linux, and Mac OS X in a variety of languages. You can get the latest released version of Firefox here or the latest development version of Firefox here.
For builds for other systems and languages not provided by Mozilla, see the Contributed Builds section at the end of this document.
Installing
Please note that installing a new version of Firefox will overwrite your existing installation of Firefox. You won’t lose any of your bookmarks or browsing history, but some of your extensions and other add-ons might not work until updates for them are made available.
Uninstalling
You can remove Firefox with the Add/Remove Programs utility on Windows, by moving the Firefox application to the Trash on Mac OS X, or by deleting the containing folder on Linux.
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By default, removing Firefox won’t remove your bookmarks, web browsing history, extensions or other add-ons. This data is stored in your profile folder, which can be found by going to the Help menu and selecting Troubleshooting Information.... The button next to the Profile Directory line in Application Basics will open your profile directory in your system's file explorer.
Please note that if you keep your profile, any version of Firefox that you install after removing Firefox will continue to use the bookmarks, web browsing history, add-ons, and other data from this profile folder.
Add-ons and Themes
You can get Add-ons and Themes by opening the Add-ons Manager, or by visiting the Add-ons Web site. Add-ons installed with previous versions of Firefox may not yet have been updated by their authors to work with this Firefox. If you wish to help test Add-ons, please install the Add-on Compatibility Reporter - your favorite Add-on author will appreciate it!
Known Issues
This list covers some of the known problems with Firefox which will be resolved in future versions:
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