FirebaseAuth signInWithEmailAndPassword() in v11.4.2 not responding

Question

I have upgraded to Firebase Android libraries v11.4.2 to try out Firestore on my Android app. However, when I try to use FirebaseAuth to login with signInWithEmailAndPassword()

Answer 1

I figured this out. The emulator had the wrong version of Play services. I followed the directions in the first answer for this question: Google Play services out of date. Requires 11011000 but found 10289574 and it worked.