How to fix Warning "Simulating the ESC keystroke to close the unexpected window."?

Usually this msg comes whie handling unexpected window.

If you go to tools/current project properties in menu and click on play back in right panel

You may have ticked press Esc in "On unexpected window"



The problem is your test having some other window, not related to what is being testing at that moment.   

So check,

1) the previous windows are properly closed

2) your test designe to give enough time to close previous windows/pages

3) some pop up window came which u didn't handle in test