Hi, The keyboard-escape-quit is bound to M-ESC ESC, however, in Windows 7, the "M-ESC" is captured by the system first. It makes the key binding nosense. I aslo tried ESC ESC ESC, and it reported that " ESC is undefined". Windows 7 Emacs GNU Emacs 27.0.50 (build 1, x86_64-w64-mingw32) of 2018-06-30 Best Regards, Shuguang