Firebase Error -auth Auth-domain-config-required- [top]

Even with the correct config, if you are developing on a specific domain (like a production URL or a custom dev tunnel), it must be whitelisted:

Instead, update your firebase.json (if using Firebase Hosting) to explicitly handle rewrites. Firebase Error -auth Auth-domain-config-required-

The most reliable way to fix this is to copy the fresh config directly from the : Navigate to Project Settings (gear icon) > General . Scroll down to Your apps and select your web app. Even with the correct config, if you are