OS X El Capitan 10.11.6 hits Mac App Store with bug fixes and security enhancements
A sixth major software update to OS X El Capitan 10.11 since its September 2015 debut is now available for public consumption as a free-of-charge release on the Mac App Store. To apply the update, launch the Mac App Store on your computer and click the Purchased tab: OS X El Capitan 10.11.6 should be sitting there, waiting for you to download it. If not, give it a few minutes or hours as new software takes some time to propagate across the Internet.