Command+Option+W does NOT close all open windows in El Capitan!

[kathyricks]

It worked in Mavericks and Snow Leopard, so why not El Capitan? El Capitan forces me to spend minutes closing one open window at a time using Command + W.

 

[chrfr]

It worked in Mavericks and Snow Leopard, so why not El Capitan? El Capitan forces me to spend minutes closing one open window at a time using Command + W.

I think you've changed something with your system. Command-option-w works just as it always has.