safari Version 10.0.3 (12602.4.8) and Os 10.12.3 hotmail will not allow login
found the problem java was not updated I needed to uninstall java then install the latest version it all works fine !!!!

more info :- 

https://java.com/en/download/help/mac_uninstall_java.xml

https://www.java.com/en/download/help/mac_java_update.xml