Regarding abetterfuture's suggestion, I never see the QB window (just the message in a dialog box, after which QB closes), so I never have a chance to do the quick "X" click to close the Home page. I'd be fine without the home page, but my business will collapse if I can't pay bills, reconcile my accounts, and reference past activity for taxes (etc). Thanks for the suggestion, though!

I am running Windows 10 Pro, Version 21H1. I'm unsure which build removed Internet Explorer. I see a cumulative update, KB5014699 on 6/15/22, but that KB article doesn't mention the removal of IE.