Sierra reached that same loss of support on October 7, 2019, and High Sierra reached it on December 1, 2020. For example, the macOS El Capitan already hit the end of life in August 2018 and stopped receiving security updates from Apple. This new loss of support due to the security certificate only compounds the issues that older Mac users were facing. Why You Should Not Be Running an Outdated Operating System For example, Sophos Home Premium and free antivirus software are also no longer supporting updates for El Capitan, Sierra, and High Sierra operating systems. This loss of support isn’t only for websites, you’ll find that other software providers are also dropping support for those older versions of Mac for a similar reason. These operating system users will notice that websites that used to load do not load any longer because of an outdated certificate.

This security certificate has been updated in later versions of macOS, but those older versions have been left out in the cold. Many users running older versions can’t get to secure websites any longer as of the end of September and need to upgrade or purchase a new computer. This is due to losing the support of an important root security certificate. Once you do that, follow the instructions presented to you on the display and download the updated firmware with patches for Spectre and Meltdown vulnerabilities.Users running El Capitan, High Sierra, and older versions of the Mac operating systems have just had access blocked to multiple sites. If you're interested, which you should be, all you have to do is navigate to the Updates tab in the Mac App Store and find the necessary updates for your Mac. Apple Releases Further Patches For Meltdown Vulnerability For macOS Sierra And El Capitanįor both of these platforms, macOS Sierra and El Capitan, the new update carrying the devised fixes for the said exploits can be downloaded from the Mac App Store.

So let's dive in to see some more details on the new update and how users can download it on their compatible Macs. Now, the company has released a security update for macOS Sierra 10.12.6 and El Capitan 10.11.6 that includes further patches for security addressing the Spectre and Meltdown vulnerabilities. The update is live and available for all users and can be downloaded over the air. Apple recently rolled out the final version of macOS High Sierra 10.3.3 for all compatible Mac models.

El capitan vs sierra security