Firefox 149.0.2 Download for Windows 32 bit , 64 bit , arm 64

You are about to download Firefox, Version ( 149.0.2 ) for Windows.

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All you need to know about this download

Version: 149.0.2
Last updated: 07 April, 2026
Supported OS: Windows 10 (64-bit) / Windows 11
File Name for 32 bit: Firefox%20Setup%20149.0.2.exe
File Size for 32 bit: 72.5 MB
File Hash Code for 32 bit: da60a70e8fed390aab7eaf4f37d758143cac4132458d145b4a8d8b5aeae55583
Firefox 149.0.2 for 32 bit is scanned using 58 antivirus apps (Check VirusTotal Scan Report)
File Name for 64 bit: Firefox%20Setup%20149.0.2.exe
File Size for 64 bit: 82.4 MB
File Hash Code for 64 bit: 15e33e214b66798971af097753970de1ac03ed5cff1dd6cc865494b803669331
Firefox 149.0.2 for 64 bit is scanned using 61 antivirus apps (Check VirusTotal Scan Report)
File Name for arm 64: Firefox%20Setup%20149.0.2.exe
File Size for arm 64: 76.4 MB
File Hash Code for arm 64: aa78ec60f7332a97135a6f2389c0b121d3505ff36823f1ca5a9f500c8e42dcb9
Firefox 149.0.2 for arm 64 is scanned using 58 antivirus apps (Check VirusTotal Scan Report)
After clicking on start download, this application will start downloading from Official Server
The file is in its Orginal Form. Fileion does not bundle or repack or modify downloads in any way.

Installing Process

How to Install Firefox 149.0.2 on Windows: Step-by-Step Guide

1

STEP 1

Download the Firefox installer for Windows(32-bit or 64-bit according to your needs) from above

2

STEP 2

Open the downloaded file (Firefox Setup.exe)

3

STEP 3

Click "Run" and follow the on-screen instructions

4

STEP 4

Click on the "Confirm and Continue" button

5

STEP 5

Click "Finish" to complete the installation

6

STEP 6

Launch Firefox and start browsing

7

STEP 7

If you want, you can make it the default browser

Change Log

Firefox for Windows Change Log

Checkout what's new in Firefox for Windows Version (149.0.2)

Mozilla Firefox 149.0.2 was released on April 7, 2026. This update focuses on security fixes and resolves several issues affecting performance, layout, and overall browser functionality.

Improvements & Fixes

Implemented various security fixes to enhance browser safety.
Fixed an issue where web page elements (such as drop-down menus) did not display correctly when printing.
Resolved a problem where website error pages showed generic messages instead of specific server error details.
Fixed a crash related to security keys and WebAuthn authentication.
Fixed an issue on Linux where the toolbar could become unresponsive after dragging a tab using Wayland.
Corrected a layout issue with misaligned text inside SVG graphics.
Fixed a problem where "Send to device" did not work from the Open Tabs section in Firefox View.