MAC OS X 10.10 Yosemite and later: Yahoo Messenger is not compatible
To continue delivering a safe, secure, and stable Yahoo Messenger for Mac, Yahoo Messenger won?t be supported on versions newer than Mac OS X 10.9 Mavericks.
Use a messenger called Trillion instead, only messenger that is compatible with Yosemite for yahoo clients.
MAC OS X 10.10 Yosemite and later: Yahoo Messenger is not compatible
To continue delivering a safe, secure, and stable Yahoo Messenger for Mac, Yahoo Messenger won?t be supported on versions newer than Mac OS X 10.9 Mavericks.
Use a messenger called Trillion instead, only messenger that is compatible with Yosemite for yahoo clients.