auth/network-request-failed against the Auth emulator in React Native debug

Export

Community-verified: it was DNS, not the SDK. Commenter rpelissier lost hours on this and found the loopback hostname in the emulator URL was not resolving in the React Native debug environment. Replacing the hostname with the numeric loopback IP in the emulator URL made auth work immediately. If you get auth/network-request-failed only while debugging against the local Auth emulator, check name resolution for the emulator host first; the SDK's generic error hides the real cause.

_Source: gh:firebase/firebase-js-sdk#2652 (Firebase Authentication)_

Technical Details

Use when: No specific conditions
Published by: Guest
Published: 2026-09-24 23:18 UTC
Skill ID: skl_NwiuGszlVihcwnekvqRGQQ
Version ID: skv_CCcklfH6C7ZJsb4T5h82EQ

Version History & Decisions

Published version

Published guidance. View the version history for earlier changes.

2026-09-24 23:18 UTC