Hi, MikeJPas
Welcome to the Microsoft community.
If I understand correctly, you want to enter maps xxxx in the search bar to open Google Maps and search for the keyword, right? We tried it and found that the error might be due to the incorrect address. Our settings are as follows, you can refer to them. We tested and it should work correctly.
(URL https://www.google.com/maps/search/?q=%s)
Enter maps then enter space key you should see this.
Best regards
Tommy Jin | Microsoft Community Support Specialist