Unfortunately, there is no shortcut for this action.
To reopen accidentally closed browser window(s):
Restoring an entire window of tabs is not as straightforward as a single tab, but it’s possible. If you use multiple browser windows, you might lose tabs by accidentally closing one or more windows either by clicking the X button (close window), pressing ⌘+⇧+W / Ctrl+⇧+W shortcut, or quitting the browser with ⌘+⇧+W / Ctrl+⇧+W shortcut. Tip: You can repeat this action all the way back to the first closed tab after the browser started the last time. Luckily, it’s just as easy to reverse this action. It’s very common to click the X button in the tab by accident or hit ⌘+W / Ctrl+W shortcut prematurely. Restore tabs with Chrome options Restore last closed tab This article will teach you six ways to restore tabs and retrieve hours of research it took to find them. If your browser just crashed, or you accidentally closed a window, don’t panic.