View All Resources

OS X El Capitan

OS X version 10.11 El Capitan was released on September 30, 2015. This latest version of OS X includes many refinements to OS X version 10.10 Yosemite, as well as a few new features. El Capitan is a no-cost upgrade for all OS X users.

Information Systems & Computing (ISC) believes that it is reasonable for many OS X users at the University with a compatible Mac to upgrade to OS X version 10.11 El Capitan. Before upgrading, faculty and staff should consult with their Local Support Provider (LSP) to ensure that local requirements are fulfilled.

OS X version 10.11 El Capitan works as expected with many Penn applications and services, including AirPennNet, Penn+Box, ISC Exchange, and ISC Zimbra. Known issues at the University include:

  1. There are many issues with El Capitan and professional audio software. Check the compatibility of specific audio applications and plug-ins before considering an update to El Capitan.
  2. Though Symantec Endpoint Protection 12.1.6 functions as expected with El Capitan, the only version fully supported by Symantec is SEP 12.1.6 MP2, which is available on the University’s supported products page at:

For more detailed information regarding El Capitan’s compatibility at Penn, please see the University’s supported products page. 

El Capitan can be thought of as a service pack for OS X version 10.10 Yosemite. It includes significant upgrades to many core applications such as Mail, Maps, and Photos. Core operating system functions such as Spotlight and Mission Control have been enhanced. The new operating system also includes a new version of Apple’s Safari web browser, version 9.0, which is also available for Yosemite. For more detailed information about El Capitan, see: