Firefox Release Notes
Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.
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Download Firefox — English (US)
Your system doesn't meet the requirements to run Firefox.
Your system doesn't meet the requirements to run Firefox.
Please follow these instructions to install Firefox.
Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.
Download Firefox — English (US)
Your system may not meet the requirements for Firefox, but you can try one of these versions:
Download Firefox — English (US)
Your system doesn't meet the requirements to run Firefox.
Your system doesn't meet the requirements to run Firefox.
Please follow these instructions to install Firefox.
October 31, 2019
Fix for an issue that caused some websites or page elements using dynamic JavaScript to fail to load. (Bug 1592136)
Update OpenH264 video plugin for macOS 10.15 users (Bug 1587543)
Title bar no longer shows in full screen view (Bug 1588747)
OpenH264 video codec version bump for macOS 10.15 users (Bug 1587543)
Download Firefox — English (US)
Your system may not meet the requirements for Firefox, but you can try one of these versions:
Download Firefox — English (US)
Your system doesn't meet the requirements to run Firefox.
Your system doesn't meet the requirements to run Firefox.
Please follow these instructions to install Firefox.