Running El Capitan 10.11.6. Observed that there is no home button on Safari tool bar. Attempted to add home button via "View/Customize Toolbar" but dragging any icon to toolbar has no effect, and there is no "default tool set" icon visible that would enable me to reset the tool bar. Other descriptions of this problem say to select "Reset Safari" from drop-down menu on Safari task bar, but this option does not appear on my system. Every userid on this system exhibits this same problem, including Administrator. Logging off and logging back on does not resolve problem. Restarting system does not resolve problem. I have a workaround in place for the home button, but I would appreciate any help in resolving this problem.