Mozilla Firefox Quantum V66.0.5 -

Automatically prevents websites from playing sound-enabled media.

As part of the broader Firefox 66 release, this version includes: Mozilla Firefox Quantum v66.0.5

The primary fix in v66.0.5 addressed a remaining issue where web extensions were still disabled for users with a master password set. Mozilla Firefox Quantum v66.0.5

A new ability to search through all open tabs via the tab overflow menu. Mozilla Firefox Quantum v66.0.5

Prevents web pages from "jumping" while images and advertisements load.

Allows users to authenticate on websites using facial recognition or fingerprints on Windows 10. System Requirements Firefox 66.0.5 System Requirements