It might be that your device has some compatibility issues with the Microsoft News app. Also, there could be too many background apps running, hogging your device's resources and preventing the stories from loading.
There could be a few reasons. Maybe the Microsoft News app is having technical glitches or needs an update. Or, it could be that there's a problem with the servers providing the stories.
It could be due to a poor internet connection. Maybe your network is unstable or too slow to load the stories.