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Install Mozilla Firefox (en-US)

Mozilla Firefox is free and open source software, built by a community of thousands from all over the world.

Install with winget
winget install --id Mozilla.Firefox
Upgrade
winget upgrade --id Mozilla.Firefox
Uninstall
winget uninstall --id Mozilla.Firefox

About Mozilla Firefox (en-US)

Firefox Browser, also known as Mozilla Firefox or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. In 2017, Firefox began incorporating new technology under the code name Quantum to promote parallelism and a more intuitive user interface. Firefox is officially available for Windows 7 or newer, macOS, and Linux. Its uno...

What's new in 152.0.4

Version 152.0.4, first offered to Release channel users on June 30, 2026 New - Smart Window includes several enhancements: - You can now ask it to close your tabs, with a confirmation step when needed and the option to undo afterward. (Bug 2040769) - Browsing history results now appear with images. (Bug 2038069) - When you give feedback on a response, you can now choose from common reasons and preview exactly what will be shared before submitting. (Bug 2033002) This feature is part of a progressive roll out. What is a progressive roll out? Certain new Firefox features are released gradually. This means some users will see the feature before everyone does. This approach helps to get early feedback to catch bugs and improve behavior quickly, meaning more Firefox users overall have a better experience. Fixed - Fixed copy, paste, undo, redo, and similar keyboard shortcuts not working inside macOS system dialogs such as the Save and Open panels. (Bug 2040851, Bug 2040844) - Fixed the Manage Cookies and Site Data dialog opening with an empty list when opened from the Settings search results. (Bug 2041077) - Fixed keyboard focus landing in the wrong place after following an in-page link, so pressing Tab continues from the link's position as expected. (Bug 2049307) - Various security fixes. - Reference link to 152.0.3 release notes.

Read release notes

Version history

Version Updated Notes
152.0.4 Unknown Version 152.0.4, first offered to Release channel users on June 30, 2026 New - Smart Window includes several enhancements: - You can now ask it to close your tabs, with a confirmation step when needed and the option to u...
152.0.3 Unknown Version 152.0.3, first offered to Release channel users on June 25, 2026 Fixed - Fixed an issue that could cause extreme memory usage and freezing on startup for users with language packs installed. (Bug 2049845) - Refer...
152.0.2 Unknown Version 152.0.2, first offered to Release channel users on June 23, 2026 Fixed - Fixed some Settings section headings showing placeholder text instead of the translated name in certain languages. (Bug 2047983) - Fixed Ne...
152.0.1 Unknown Version 152.0.1, first offered to Release channel users on June 18, 2026 Fixed - Fixed frequent crashes affecting users with Intel Raptor Lake processors. (Bug 2039575) - Fixed an issue on macOS where choosing a PDF opti...
152.0 Unknown Version 152.0, first offered to Release channel users on June 16, 2026 New - Firefox Settings features a brand-new look with streamlined organization, clearer groupings, and improved navigation for easier customization....
151.0.4 Unknown Version 151.0.4, first offered to Release channel users on June 9, 2026 Fixed - Fixed an issue on Windows where Firefox could become unresponsive when using the back and forward buttons. (Bug 2039866) - Fixed an issue wh...
151.0.3 Unknown Version 151.0.3, first offered to Release channel users on June 2, 2026 Fixed - Fixed an issue where selecting or pasting text in a text field inside a table cell could disrupt the page layout. (Bug 2041235) - Fixed an i...
151.0.2 Unknown Version 151.0.2, first offered to Release channel users on May 26, 2026 Fixed - Fixed an issue on macOS where smart cards and security keys could fail to load certificates automatically. (Bug 2041208) - Fixed an issue wh...
151.0.1 Unknown Version 151.0.1, first offered to Release channel users on May 21, 2026 Fixed - Fixed a crash experienced by users with Intel Raptor Lake CPUs. (Bug 1950764) - Fixed an issue on Windows where some websites using WebSeria...
151.0 Unknown Version 151.0, first offered to Release channel users on May 19, 2026 New - Firefox Home (New Tab) has a fresh, new look and feel. The layout and design will enable upcoming features, from widgets to shortcuts improvemen...
150.0.3 Unknown We’re still preparing the notes for this release, and will post them here when they are ready. Please check back later.
150.0.2 Unknown We’re still preparing the notes for this release, and will post them here when they are ready. Please check back later.
150.0.1 Unknown We’re still preparing the notes for this release, and will post them here when they are ready. Please check back later.
150.0 Unknown Version 150.0, first offered to Release channel users on April 21, 2026 New - Split View just got better: You can now right-click any link and choose Open Link in Split View to open it alongside your current tab. You can...
149.0.2 Unknown Version 149.0.2, first offered to Release channel users on April 7, 2026 Fixed - Various security fixes. - Fixed an issue where certain parts of web pages, such as drop-down menus and specific styles, did not appear corr...
149.0 Unknown Version 149.0, first offered to Release channel users on March 24, 2026 New - View two pages side-by-side in a single window with the new Split View feature that makes it easier to compare information, research topics or...
148.0.2 Unknown Version 148.0.2, first offered to Release channel users on March 10, 2026 Fixed - Fixed an issue where searches entered in the Firefox Home search field were incorrectly redirected to the address bar for some users who h...
148.0 Unknown Release notes
147.0.4 Unknown Release notes
147.0.3 Unknown New - Interoperability improvements for the CSS anchor positioning and Navigation web APIs. Fixed - Fixed a regression where position: sticky elements on some webpages could appear stuck or fail to update while mousewhee...