AirPort Utility can't connect
I have an Airport Extreme base station that is about a year old. I have several devices connected to the internet via this router, including the Samsung laptop I am typing this question with. If I run AirPort Utility (windows) v5.6.1 it finds the base station (says it's version 7.7.3 if that's meaningful). When I select "continue" to try to modify the settings, it says it's reading from the device and then gives an error message "An error occurred while trying to access the Apple wireless device. Make sure your network connection is valid and try again." There is an error number 10057. Notable it never asks for the device password.
I have also attempted to use AirPort utility 6.3.2 on my wife's MacBook Pro. With that device I have attempted to connect both wirelessly and via an ethernet cable. It doesn't even see the device...though it does remain connected to the internet.
I have rebooted both computers as well as the router and the behavior doesn't change.
Any thoughts on how to proceed?
Airport Extreme Base Station-OTHER