WHAT ARE WE DOING?
macOS El Capitan (v10.11) is approaching its end-of-life (EOL). When EOL occurs macOS El Capitan will no longer be supported by Apple and therefore will stop receiving security updates.
Starting Thursday, Nov. 1, 2018, any Mac computer running macOS El Capitan (v10.11) will be blocked from accessing the Fermilab network. Fermilab-owned computers, by laboratory policy, must run vendor-supported operating systems to avoid security risks.
WHAT IS THE IMPACT TO YOU?
If your Mac is running macOS El Capitan (v10.11), you must upgrade it to High Sierra (v10.13) or Sierra (v10.12) before Thursday, Nov. 1, 2018.
WHAT DO YOU NEED TO DO?
• If you want to upgrade your Mac on your own, you can do so by using the “Upgrade to macOS High Sierra 10.13” or “Upgrade to macOS Sierra 10.12” options in the “Self Service” application.
• If you need assistance, please submit a Service Desk ticket to request an upgrade to High Sierra (v10.13) or Sierra (v10.12).
• If you have an old Mac that can’t be upgraded, please begin planning for the replacement or decommissioning of the Mac.