Mac OS X 10.10.5 was an update to Mac OS X 10.10 released on August 13, 2015. This update includes the following: * Improves compatibility with certain email servers when using Mail * Fixes an issue in Photos that prevented importing videos from GoPro cameras * Fixes an issue in QuickTime Player that prevented playback of Windows Media files For detailed information about the security content of this update, see Apple security updates.