Latest Firefox released for Windows


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Firefox Release Version: 155.0 (FTP only currently)
Release Date: August 31, 2026

FTP Download Page:
(32-bit) Directory Listing: /pub/firefox/releases/155.0/win32/en-US/
(64-bit) Directory Listing: /pub/firefox/releases/155.0/win64/en-US/

32-bit and 64-bit Download Page: Mozilla Firefox Web Browser - Download Firefox in your language - Mozilla

Release Notes: Firefox Release Notes




Firefox Release Candidate Version: 155.0 Build 1 (RC1)
Release Date: August 27, 2026

FTP Download Page:
(32-bit) Directory Listing: /pub/firefox/candidates/155.0-candidates/build1/win32/en-US/
(64-bit) Directory Listing: /pub/firefox/candidates/155.0-candidates/build1/win64/en-US/

Directory Listing: Directory Listing: /pub/firefox/candidates/




Firefox BETA Version: 156.0b1
Release Date: August 31, 2026

FTP Download Page:
(32-bit) Directory Listing: /pub/firefox/releases/156.0b1/win32/en-US/
(64-bit) Directory Listing: /pub/firefox/releases/156.0b1/win64/en-US/

32-bit and 64-bit Download Page: Mozilla Firefox Beta Web Browser - Download Firefox Beta in your language - Mozilla

Release Notes: Firefox Release Notes




Firefox Nightly Version: 157.0a1
Release Date: August 27, 2026

32-bit and 64-bit Download Page: Mozilla Firefox Nightly Web Browser - Download Firefox Nightly in your language - Mozilla

FTP Download Page: Directory Listing: /pub/firefox/nightly/mozilla-central/

Release Notes: Firefox Nightly Release Notes

 
Last edited:
Click to expand...
Starting with the release of Firefox 155 on Tuesday September 1st Mozilla is switching to a 2 week release schedule for major versions, IE: 155, 156. 157 ect.

Firefox Release Calendar

Firefox Release Calendar.webp
 

My Computers My Computers

System One System Two Other systems

  • At a glance

    Windows 11 Pro x 2 + Insider DevIntel Core i9 12900K @ 5.2 GHz2 x Corsair Dominator Platinum RGB (4x16GB To...EVGA GeForce RTX 3080 XC3 ULTRA GAMING 10GB G...
    OS
    Windows 11 Pro x 2 + Insider Dev
    Computer type
    PC/Desktop
    Manufacturer/Model
    My first abomination, I call it the Money Pit One
    CPU
    Intel Core i9 12900K @ 5.2 GHz
    Motherboard
    ASUS ROG MAXIMUS Z690 HERO
    Memory
    2 x Corsair Dominator Platinum RGB (4x16GB Total) DDR5-6200 CL36 Dual Channel Kit
    Graphics Card(s)
    EVGA GeForce RTX 3080 XC3 ULTRA GAMING 10GB GDDR6X
    Sound Card
    ROG SupremeFX ALC4082 with ESS® ES9018Q2C DAC for pinpoint positioning and dynamics
    Monitor(s) Displays
    2 x Samsung 43" HDR Neo QLED Mini-LED Tizen Smart TV (QN43QN90DAFXZC) 2024
    Screen Resolution
    1920 x 1080 @ 150 DPI & 120Hz
    Hard Drives
    2 x Samsung 980 Series - 250GB PCIe Gen3. X4 NVMe 1.4 - M.2 Internal SSD (Windows 11 Pro Dual boot)
    PSU
    Corsair HX1000i 80+ Platinum Modular Power Supply 1000W
    Case
    Phanteks Enthoo Luxe Tempered Glass Full Tower Case - Black
    Cooling
    CORSAIR iCUE H150i RGB Elite 360mm Liquid CPU Cooler
    Keyboard
    Perixx PERIBOARD-732B Wireless Mini Backlit USB Keyboard with Low Profile Keys - US Layout
    Mouse
    Logitech MX Anywhere 2S Wireless Mouse
    Internet Speed
    1000 Mbps
    Browser
    Latest Version Of Firefox & Microsoft Edge Chromium Stable
    Antivirus
    ESET Internet Security
    Other Info
    LG Electronics 14x Sata Blu-ray Disk Rewriter - WH14NS4O
    2 x OREI 4K 4x2 HDMI Matrix Switch With ARC Audio Extraction, HDR & Downscaling (UHD-402D) so I can send the output of my Cable Box, Roku, or any of my 4 computers to either of my TV's separately or simultaneously.

  • At a glance

    Windows 11 Pro x 2Intel Core i9 12900K @ 5.2 GHz2 x Vengeance RGB 32GB DDR5 6400MHz CL32 Dual...ASUS TUF Gaming GeForce RTX 3070 Ti OC Editio...
    Operating System
    Windows 11 Pro x 2
    Computer type
    PC/Desktop
    Manufacturer/Model
    My second abomination, I call it the Money Pit Two
    CPU
    Intel Core i9 12900K @ 5.2 GHz
    Motherboard
    ASUS ROG STRIX Z690-F GAMING WIFI
    Memory
    2 x Vengeance RGB 32GB DDR5 6400MHz CL32 Dual Channel Kit (4x16GB Total) Black
    Graphics card(s)
    ASUS TUF Gaming GeForce RTX 3070 Ti OC Edition 8 GB GDDR6X
    Sound Card
    ROG SupremeFX ALC4082 with ESS® ES9018Q2C DAC for pinpoint positioning and dynamics
    Monitor(s) Displays
    2 x Samsung 43" HDR Neo QLED Mini-LED Tizen Smart TV (QN43QN90DAFXZC) 2024
    Screen Resolution
    1920 x 1080 @ 150 DPI & 120Hz
    Hard Drives
    2 x Samsung 980 Series - 250GB PCIe Gen3. X4 NVMe 1.4 - M.2 Internal SSD (Windows 11 Pro Dual boot)
    PSU
    Corsair AX860 - 860W Modular Power Supply
    Case
    Phanteks Enthoo Pro Tempered Glass Full Tower Case - Black
    Cooling
    CORSAIR iCUE H150i RGB Elite 360mm Liquid CPU Cooler
    Keyboard
    Perixx PERIBOARD-326 Wireless Mini Backlit USB Keyboard with Low Profile Keys - US Layout
    Mouse
    Logitech MX Anywhere 2S Wireless Mouse
    Internet Speed
    1000 Mbps
    Browser
    Latest Version Of Firefox & EDGE Chromium Stable
    Antivirus
    ESET Internet Security
    Other Info
    LG Electronics 14x Sata Blu-ray Disk Rewriter - WH14NS4O
    2 x OREI 4K 4x2 HDMI Matrix Switch With ARC Audio Extraction, HDR & Downscaling (UHD-402D) so I can send the output of my Cable Box, Roku, or any of my 4 computers to either of my TV's separately or simultaneously.
  • 2021 ASUS TUF Gaming A17 - FA706QM Gaming Laptop with a AMD Ryzen™ 7 5800H Mobile Processor, NVIDIA GeForce RTX 3060 Laptop GPU and AMD Graphics (512 MB), 17.3-inch, FHD (1920 x 1080) 16:9, Value IPS-level, Anti-glare display, 2 x 8GB DDR4 3200 SDRAM, Samsung 980 Series - 250GB PCIe Gen3. X4 NVMe 1.4 - M.2 Internal SSD running Windows 11 Pro , Backlit Chiclet Keyboard 1-Zone RGB, Touchpad, 720P HD camera, Wi-Fi 6(802.11ax) (Dual band) 2*2 + Bluetooth® 5.3 Wireless Card

    External Keyboard: Perixx PERIBOARD-326 Wireless Mini Backlit USB Keyboard with Low Profile Keys - US Layout

    External Mouse: Logitech MX Anywhere 2S Wireless Mouse

    External Monitor: Samsung 43" HDR Neo QLED Mini-LED Tizen Smart TV (QN43QN90DAFXZC) 2024
New Firefox WHQL version 155.0 released. See first post for more details. :alien:
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro for WorkstationsIntel i7-8700K 5 GHz64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600...ASUS ROG-STRIX-GTX1080TI-O11G-GAMING (11GB GD...
    OS
    Windows 11 Pro for Workstations
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom self build
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING (11GB GDDR5X)
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO M.2,
    TerraMaster F8 SSD Plus NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Amazon Basics Wired Full Keyboard MD005
    Mouse
    Logitech MX Master 4
    Internet Speed
    2 Gbps Download and 100 Mbps Upload
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    CyberPower CP1500PFCLCD
    Galaxy S23 Plus phone

  • At a glance

    Windows 11 ProSnapdragon X Elite (12 core) 3.42 GHz16 GB LPDDR5x-7467 MHz
    Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Surface Laptop 7 Copilot+ PC
    CPU
    Snapdragon X Elite (12 core) 3.42 GHz
    Memory
    16 GB LPDDR5x-7467 MHz
    Monitor(s) Displays
    15" HDR
    Screen Resolution
    2496 x 1664
    Hard Drives
    1 TB SSD
    Internet Speed
    Wi-Fi 7 and Bluetooth 5.4
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender
It's b-a-a-a-c-k. LOL


And it's installed.
 

My Computers My Computers

System One System Two

  • At a glance

    Win 11 Home ♦♦♦26200.9278 ♦♦♦♦♦♦♦25H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26200.9278 ♦♦♦♦♦♦♦25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1

  • At a glance

    Windows XP Pro 32bit w/SP3AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
I just grabbed Firefox v155.0.0 will install in a sec.
brb.

edit:
All is good so far with v155.0 nothing crashing at least.
 
Last edited:

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro (x64)(v25H2)(26200.9278)AMD Ryzen 9 3900X 12-Core/24-threads64GB, 2x G.Skill 32GB (PC3200)(DDR4-2137)ASUS PRIME GeForce RTX 5070 12GB OC Edition, ...
    OS
    Windows 11 Pro (x64)(v25H2)(26200.9278)
    Computer type
    PC/Desktop
    Manufacturer/Model
    (custom-build)[Self-built](June 2020)
    CPU
    AMD Ryzen 9 3900X 12-Core/24-threads
    Motherboard
    Asus PRIME X570-PRO (BIOS_r5044 [01/04/2026])
    Memory
    64GB, 2x G.Skill 32GB (PC3200)(DDR4-2137)
    Graphics Card(s)
    ASUS PRIME GeForce RTX 5070 12GB OC Edition, GPU by NVIDIA.
    Sound Card
    Realtek® ALC1220A 8-Channel High Definition Audio CODEC
    Monitor(s) Displays
    24" DELL Gaming Monitor - G2422HS - DisplayPort used
    Screen Resolution
    1920x1080p at 165Hz (16:9 Aspect Ratio)
    Hard Drives
    2TB Samsung 980 Pro (NVMe)(SSD)
    4TB Samsung 990 Pro (NVMe)(SSD)
    2TB Samsung 870 EVO (SSD)

    NVMe 2TB
    -- OS(Win11 Pro x64),
    -- programs,
    -- programming(MS Visual Studios 2022 Community Ed.),
    -- music

    NVMe 4TB
    video game installs.

    #3 FILE Server!
    PSU
    Thermaltake TOUGHPOWER DPS G RGB Titanium Certified 1250Watt
    Case
    Corsair Graphite Series 780T Full Tower PC Case
    Cooling
    AMD Wraith cooler (stock) & 3x Corsair case fans
    Keyboard
    Redragon K580 VATA RGB LED Backlit Mechanical Gaming Keyboard (brown switches).
    Mouse
    Redragon M602 RGB Wired USB Gaming mouse
    Internet Speed
    2,100Mbps Download, 300Mbps Upload
    Browser
    Firefox & Google Chrome
    Antivirus
    n/a aka "ABOVE TOP SECRET!" lol ;)
    Other Info
    My System is the ULTIMATE GAMING RIG ^_^
    TP-Link BE9300 Tri-Band Wi-Fi 7 Wireless 2.5Gigabit Router
    Model Archer BE550 (v1.0)
    Arris S34 Cable Modem

    printer/scanner/copier: Brother DCP-7065DN

    Nvidia GFX Drivers: (v616.56)
    Realtek UAD Drivers: (v6.0.10023.1)
    Realtek LAN Drivers:(v1125.31.50.603)(2026-06-03)
    Intel LAN Drivers: (v14.01.24.00)(2025-10-03)

  • At a glance

    Windows 11 Pro x64AMD Ryzen 7 5800H32GB GSkill DDR4 2x 16GB sticksRyzen 7 5800H integrated AMD Radeon Graphics ...
    Operating System
    Windows 11 Pro x64
    Computer type
    Laptop
    Manufacturer/Model
    DELL G15 Ryzen edition, model 5515
    CPU
    AMD Ryzen 7 5800H
    Motherboard
    DELL G15 Ryzen edition
    Memory
    32GB GSkill DDR4 2x 16GB sticks
    Graphics card(s)
    Ryzen 7 5800H integrated AMD Radeon Graphics and Nvidia GeForce 3060 6GB
    Sound Card
    Realtek ALC3254 with Nahimic 3D Audio for Gamers
    Monitor(s) Displays
    built-in
    Screen Resolution
    1920x1080
    Hard Drives
    512GB NVMe SSD, 1TB Samsung 970 EVO NVMe SSD
    PSU
    unknown
    Case
    laptop
    Keyboard
    built-in
    Mouse
    Logitech B100 USB
    Internet Speed
    2,100Mbps download, 300Mbps upload
    Browser
    Firefox & Google Chrome

My Computer My Computer

At a glance

Windows 11 ProIntel Core i9 12900KFCorsair 64GB DDR5 Vengeance C40 5200MhzASUS GeForce RTX 3090 ROG Strix OC 24GB
OS
Windows 11 Pro
Computer type
PC/Desktop
Manufacturer/Model
Custom Build
CPU
Intel Core i9 12900KF
Motherboard
ASUS ROG Maximus Z690 Hero
Memory
Corsair 64GB DDR5 Vengeance C40 5200Mhz
Graphics Card(s)
ASUS GeForce RTX 3090 ROG Strix OC 24GB
Sound Card
OnBoard
Monitor(s) Displays
Acer Predator XB323UGP 32" QHD G-SYNC-C 144Hz 1MS IPS LED
Screen Resolution
2560 x 1440
Hard Drives
1x Samsung 980 Pro Series Gen4 250GB M.2 NVMe
1x Samsung 980 Pro Series Gen4 500GB M.2 NVMe
2x Samsung 980 Pro Series Gen4 2TB M.2 NVMe
PSU
Corsair AX1200i 1200W 80PLUS Titanium Modular
Case
Corsair 4000D Black Case w/ Tempered Glass Side Panel
Cooling
Noctua NH-U12A Chromax Black CPU Cooler, 4x Noctua 120mm Fans
Keyboard
Logitech MK545
Mouse
Logitech MX Master 3
Internet Speed
Fixed Wireless 150mbps/75mbps
Browser
Firefox
Antivirus
Kaspersky
Other Info
Thrustmaster TS-PC RACER
Fanatec CSL Elite Pedals with the Load Cell Kit
Yamaha Amp with Bose Speakers
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