I forget the name of it, but I remember there is (or at least used to be) a tool that would give you more granular control over the stuff that's under the hood of Windows.
If you search for "Windows God mode tool" or something along those lines, your should be able to find it.
Not sure if this will get rid of your pop-up modal specifically, but it might allow you to mess with other configurations that can prevent these sorts of things.