Name: Mozilla Firefox (nn-NO)
Author: Mozilla

Mozilla Firefox (nn-NO)

Mozilla·Mozilla.Firefox.nn-NO

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

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 unofficial ports are available for various Unix and Unix-like operating systems including FreeBSD, OpenBSD, NetBSD, illumos, and Solaris Unix.

winget install --id Mozilla.Firefox.nn-NO --exact --source winget

Latest 156.0·September 15, 2026

Release Notes

Version 156.0, first offered to Release channel users on September 15, 2026

New

Firefox on macOS can now be set to open automatically when the computer starts up, from the Startup section of Settings.
Localized Wikipedia and occasional sponsored suggestions in the address bar are now available in France, Germany, and Italy. These suggestions can be turned off in Firefox Suggest settings.

Fixed

Fixed an issue where dragging an image to a new position in a rich-text editor could replace it with a long line of text instead of moving it.
Fixed high-sample-rate FLAC audio in MP4 failing to play on sites such as Bilibili.
Fixed subtitles not appearing in the Picture-in-Picture window when they are turned on in the video player after the window has already opened.
Fixed bookmarks moving out of their folder when the folder and the bookmarks inside it were selected and dragged together in the Bookmarks sidebar.
Fixed the find bar becoming permanently unavailable in a tab after reversing the panes in Split View.
Fixed some sites failing to load when DNS over HTTPS is enabled and the site does not support HTTPS.
Fixed Firefox losing all network connectivity for some users with the built-in VPN enabled.
Fixed an issue on Windows where Firefox could block an auto-hiding taskbar from showing.
Various security fixes.

Changed

Firefox's built-in PDF viewer now starts up to 45% faster.
Improved memory and CPU usage when Firefox displays large JPEG images scaled down to fit a page.
On Windows devices with ARM64 processors, WebRTC video calls may now use hardware H264 decoding instead of falling back to software.

Enterprise

You can find information about policy updates and enterprise-specific bug fixes in the Firefox for Enterprise 156 Release Notes.

Developer

Web Platform

text-box-trim now uses the font metrics of a ::first-line pseudo-element when one applies, matching other browsers and the specification.

Community Contributions

With the release of Firefox 156, we are pleased to welcome the developers who contributed their first code change to Firefox in this release, 10 of whom were brand new volunteers! Please join us in thanking each of these diligent and enthusiastic individuals, and take a look at their contributions:
- Aaron Ma: 2063818
- Dominik Bay [:eimann]: 2066736
- ExplodingJoysticks: 1728637, 1890400, 1910664, 1928343, 1944206, 2000658, 2003000, 2059911, 2061541
- Gopalarathnam Venkatesan: 2003172, 2042426, 2062096, 2062952, 2062989
- Hugo Osvaldo Barrera: 2063808
- Kana: 2062133
- Kerissa Grubb: 2042422
- Louis-Philippe Manette: 2062972, 2063867
- Seunghyun An: 2063033
- William McDonald: 1034964

Installer type: `nullsoft`

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Details

Homepage: https://www.mozilla.org/firefox/
License: MPL-2.0
Publisher: Mozilla
Support: https://support.mozilla.org/
Privacy Policy: https://www.mozilla.org/privacy/firefox/
Copyright: © Firefox and Mozilla Developers; available under the MPL 2 license.
Moniker: firefox

Older versions (61)

155.0.1

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155.0

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154.0.1

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154.0

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153.0.4

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153.0.3

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153.0.1

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153.0

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152.0.6

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152.0.5

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152.0.4

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152.0.3

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152.0.2

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152.0.1

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152.0

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151.0.4

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151.0.3

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151.0.2

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151.0.1

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151.0

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150.0.3

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150.0.2

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150.0.1

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150.0

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149.0.2

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149.0

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148.0.2

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148.0

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147.0.4

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147.0.3

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147.0.2

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147.0.1

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147.0

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146.0.1

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146.0

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145.0.2

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145.0.1

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145.0

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144.0.2

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144.0

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143.0.4

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143.0.3

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143.0.1

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143.0

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142.0.1

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142.0

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141.0.3

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141.0.2

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141.0

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140.0.4

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140.0.2

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140.0.1

x86—84F79559A99114BF953741F81F1A8200C630466C7717C1693001E122B9084A99

x64—857A9EFA2F31235B3EF7F75BE353EDFEBC3F44D3121E1BA71F2310E04B296C1F

arm64—D97A34D755E488FCC41C83E7C964458D72E8D363E5548126CEECAC490728F82A

140.0

x86—1D54CCCBD6785F693A1ED459B9C365E0596D692EA6C40E2574B913174CDEC517

x64—273A1219D391C29AB8E40EBE71B82EBF602EDE6696AF6E8BD391274A20D58474

arm64—FD40F7ADEEBDF69A51875DF1698EC464509BA0A60B9CEE59F887623E5235EAE9

139.0.4

x86—1B2E8BD7D41E70352E7394598D1EF712B0000D01AC685BA42BB54EB1D85E1EA9

x64—72281C023B4E5ACF6E4CBA4896C10C66EBE4075EEF5E26634551F156CA5B4A51

arm64—ECB934A46D0299B0D9674139451D0C0CC72436322D601FA7D72D72470E52F2BD

139.0.1

x86—183CE1A9657571C333C294A28D13864966B1E22BD791C9A281A31BC0AAF5746A

x64—BBE135FCDBA78B3563FCDA88C828598AC242DE72FCA20D3C53CB5B6FC35A2DAB

arm64—04C3291684EB668BC098FF6B4D893C9FE6D52B3482CCD56E74FAA2B11F322AFF

139.0

x86—07800BAA96F3C263BB10974E1C0A603D084240BDF7178C08EFB8089A6DF06A02

x64—A91DFBFA07A11B9396692677C83AB3CED1FD818686AF19FD92166EFC0463DBA0

arm64—0B44DC4D19D85B90107180247CDE1F6B60D068C82E7B27F76D8466A40A343513

138.0.4

x86—D43752BCA70116C3EE1C7F0B08EB274826D62B8818E940A9486EE0D06D33CBF5

x64—B7DA893040A2E56D8D95C77E1BC023CAA5554DE3522DC8228A623E2FD649784B

arm64—67C5C532FF02BE1E9137E1EFF13B5D6E945C710431217A4B5ED4647998C311AE

138.0.3

x86—42750F3BC17A6F59C6534019EC4D4FCE64089143300FD81225DDEEDA3EA57DB3

x64—AED4FB393AF523F713D8CE824F2522434CF0B54369FEFF8B9A7C5CBB563430B6

arm64—8073D81EFDD7DAED839A9F3C963F330B4986C5528C0DEC712085B5277F49CE58

138.0.1

x86—F46785B7BE2830F8ECD832AD63FB33471D2D8359E899BDD06F33650ED4B64D1F

x64—AADCDCECCA454AC6DD632B9B4A977A0C3B1050B87626C417C85DCDB5EBB10348

arm64—2234331114C2BAAE78478CCAEDFE5A31D45AFADB9DC5AD500557CF283DB89E78

138.0

x86—CBBC0330B560B8007859A2B5463A57EA78A535A70939658C5A0B2AF1DEFA9C11

x64—94BB16770A9B1E3D1F8BC5307CF9C8A2F820119DAB26A852FA9397CED7E54D0B

arm64—5B1469511FD7346F02BD1C797F9304B11376326EE388FA41A241BCFE65B9422C

137.0.2

x86—8936F4333C41DB7D97DB899AE8D58D3B4B92CBE1B99B699D23AE8B096328617A

x64—B3C8E6DD6DB3354388BE2FC8AA51F0B0DC0B9857C420A1092A203737541890A0

arm64—35D5126BDF15FF7A25B45E5434B734C133B077C6F9B090133F28AC8975627BDB

Mozilla Firefox (nn-NO)

Latest 156.0·September 15, 2026

Installer type: nullsoft

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Installer type: `nullsoft`