This code on MS Edge returns a "SCRIPT7002: XMLHttpRequest: Network Error 0x80070005, Access denied." error:
firebase.auth().signInWithEmailAndPassword(email, password).then(function(user) {
},
function(error) {
// this is executed with auth/network-request-failed error code
});
It works on Chrome and Firefox and it's intended to be embedded in a WebView of an UWP app, so it's running locally.

