Firebase authentication - expired api key

Question

i am developing a serverless client app that uses Firebase authentication and other services from Google. It was all working nicely, when suddely the FB login authentication stopped working. It happens that when try to login the user i obtain a 400 BADREQUEST with the following body:

{
    "error": {
        "code": 400,
        "message": "API key expired. Please renew the API key.",
        "errors": [{
            "message": "API key expired. Please renew the API key.",
            "domain": "global",
            "reason": "badRequest"
        }],
        "status": "INVALID_ARGUMENT"
    }
}

The url causing the problem is:

https://www.googleapis.com/identitytoolkit/v3/relyingparty/getProjectConfig?key=AIzaSyDXJ1Lwo_Md0xZzFfPX9Y8dQWOaODE4uiM&cb=1534851951010

Some weird things:

• i tested with totally different projects (so brand new keys): still failing
• if i go to cloud console i found several unrestricted keys automatically created by Google (i attach a screenshot)

I also created a brand new app and executed it locally. Same outcome.

Any ideas ?

Add: i have just discovered that the Identity API is effectively returning me 100% failures at the moment.

Answer 1

I was able to get this issue as well and this helped me solve my issue:

1. Go to google api console and find the key: Android key (auto created by Google Service). These keys are automatically generated by Firebase when you choose the option: Email/password in authentication. Copy that key.

2. Go to the google-services.json in your android studio under the projects section. Click on the file and look for the api_key -> current_key. Modify that value with the api key in step 1.

Answer 2

First, go to https://console.firebase.google.com/

1. Then choose the Android project

2. Then go to SETTINGS of that project

3. First, check that: sha1 and sha256 fingerprint are there for debug apk (Necessary) and release apk (necessary if you create a signed apk)

4. There you will see a download JSON file button, click on it, and download the file.

5. Then go to Android Studio and OPEN your project.

6. Then on the left side menu, click the project subfile then find the googleservices.json file.

7. Open that file by double-clicking it

8. Now open the downloaded file, googleservices.json, and open it in notepad.

9. Now copy all the content, just select all, and copy.

10. Now go to the Android Studio, and right-click on the Google services file (in IntelliJ) and click compare with the clipboard and carefully accept all the differences into the Android Studio file.

11. Or you can directly remove all the content and paste the copied into the Android Studio JSON file.

DONE! NOTE: Make sure you make a copy of the file before doing this.