EXE
WinGet
Firefox Developer Edition (en-US)
Mozilla · 139.0 · x64
Before deploying, verify this file with VirusTotal ↗
Silent Commands
Install
"Firefox Setup 139.0b10.exe" /S /PreventRebootRequired=true
InstallPath
"Firefox Setup 139.0b10.exe" /S /PreventRebootRequired=true /InstallDirectoryPath="<INSTALLPATH>"
Intune Detection Rule
Registry Rule
Rule type
Registry
Registry hive
Key path
HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Firefox Developer Edition 139.0 (x64 en-US)
Detection method
Value name
DisplayVersion
Operator
Greater than or equal to
Value
139.0
Associated with 32-bit app on 64-bit clients
No
File Identity
Filename
Firefox Setup 139.0b10.exe
Signature
Status
Upload installer to verify signature
Installer Selection
WinGet Package
Package ID
Mozilla.Firefox.DeveloperEdition
Version
139.0
Description
Firefox Browser Developer Edition
License
MPL-2.0
↗
Support
https://support.mozilla.org/
Installer URL
https://download-installer.cdn.mozilla.net/pub/devedition/releases/139.0b10/win64/en-US/Firefox%20Setup%20139.0b10.exe
Upgrade Behavior
install(Install over existing)
Release Notes
New
- Full-Page Translations are now available within Firefox extension pages.
Fixed
- PNG images with transparency now keep their transparency when pasted into Firefox.
- The upload performance of HTTP/3 been significantly improved, particularly on resumed connections (QUIC 0-RTT) and high bandwidth and high delay connections.
- Fix for MFSA 2025-36 included in Firefox 139.0b10 and newer.
Developer
Web Platform
- window.getSelection().toString() now correctly returns the text serialization whe…