Download Teamviewer For Mac Os X 10.11.6.Apple has provided a list of the Mac supported by the new Mac OS X El Capitan and if you are already running the Mavericks or Yosemite, the same lists may also apply to the El Capitan. I confirm this fix of TeamViewer worked on my iMac (mid 2007) running Mac OS X El Capitan 10.11.6 Thank you for supporting older hardware! Check Your Mac - Check whether your Mac will be able to run the new OS X 10.11.