Chrome tabs

[Fred V1]

Is it possible to undo "Close all tabs", if the moment all tabs are closed by accident?

 

[VidJunky]

Not that I'm aware of however if you weren't in Incognito Mode and haven't disabled your browser history those last sites should be available in your history. You'll find an option to view your history in Chrome's Settings menu.

If either one of those is true, Incognito or search history disabled, you wouldn't be able to get them back anyway even if there were an option to undo close all tabs.

Your history is your best bet.