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Firebase Auth auth/operation-not-allowed

The type of account corresponding to this credential is not enabled.

Understanding Firebase Auth

Firebase Authentication is a powerful tool provided by Firebase that allows developers to easily integrate user authentication into their applications. It supports various authentication methods, including email/password, phone numbers, and popular federated identity providers like Google, Facebook, and Twitter. The primary purpose of Firebase Auth is to simplify the process of managing user identities and securing user data.

Identifying the Symptom

When using Firebase Auth, you might encounter the error code auth/operation-not-allowed. This error typically manifests when attempting to sign in or create a new user account using a method that has not been enabled in your Firebase project. The error message might look something like this:

{
"code": "auth/operation-not-allowed",
"message": "The type of account corresponding to this credential is not enabled."
}

Explaining the Issue

The auth/operation-not-allowed error occurs because the sign-in method you are trying to use is not enabled in the Firebase console. Firebase requires explicit enabling of each authentication method to ensure that only the desired methods are available for your application. This is a security measure to prevent unauthorized access through unintended sign-in methods.

Common Scenarios

This error is commonly seen when developers attempt to use a new authentication method without first enabling it in the Firebase console. For example, if you try to authenticate users via email and password without enabling this method, you will encounter this error.

Steps to Fix the Issue

To resolve the auth/operation-not-allowed error, follow these steps:

Step 1: Access Firebase Console

Log in to your Firebase Console. Ensure you are in the correct project where you are experiencing the issue.

Step 2: Navigate to Authentication Settings

In the Firebase Console, go to the Authentication section. You can find this in the left-hand menu under Build.

Step 3: Enable the Required Sign-In Method

Under the Sign-in Method tab, you will see a list of available authentication methods. Find the method you intend to use (e.g., Email/Password, Google, etc.) and click the toggle to enable it. Make sure to save your changes.

Step 4: Test Your Application

After enabling the required sign-in method, test your application to ensure that the error is resolved. Attempt to sign in or create an account using the enabled method.

Additional Resources

For more information on Firebase Authentication and managing sign-in methods, refer to the official Firebase Authentication Documentation. If you continue to experience issues, consider reaching out to the Firebase Support team for further assistance.

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