The window might not close but you should be able to uncheck the Chrome options, I always do as and when I see them.

Though I have to ask why you would want to close the window, isn’t it a notification of an update, rather than an advert ?

You don’t say what your program update settings are as they changed to automatic update (like the VPS) some time ago. You can set it to Ask or Manual if you don’t want auto program updates.