Firefox ESR 32-bit does support all NPAPI plugins, and is slated to continue to do so until early 2018. Windows compatibility. Firefox versions 39 and above (along with Firefox 38ESR and above) function correctly in Windows 10. OS X compatibility. Firefox versions 31 and above function correctly in macOS Yosemite and Sierra. Download LastPass Password Manager for Firefox. LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

Firefox Para Yosemite

Firefox version 78 is the last supported Firefox version for Mac users of OS X 10.9 Mavericks, OS X 10.10 Yosemite and OS X 10.11 El Capitan. These users will be moved to the Firefox Extended Support Release (ESR) channel by an application update. This will provide security updates until the next ESR update in July 2021, after which the affected users will no longer receive security updates.

While Apple does not have a public policy governing security updates for older OS X releases, their ongoing practice has been to support the most recent three releases. The last security update applicable to OS X 10.11 was made available in July 2018. Unsupported operating systems do not receive security updates, have known exploits and can be dangerous to use, which makes it difficult to maintain Firefox on those versions.

Up until July 2021, we will be updating affected users with critical security updates through the Firefox ESR channel to help retain the best possible security. After this, no security updates will be provided.

Firefox For Mac Os X Yosemite

Firefox Yosemite

If you want to keep your Firefox version up to date, you will need to upgrade your operating system to macOS 10.12 or higher. Older versions that are not supported by Apple are unreliable and unsafe to use, which also makes it difficult to maintain Firefox on those versions.