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### API Key authentication is not working

If API Key authorization is not working, follow these steps:

- Ensure that you have [enabled the ARCore API](https://console.cloud.google.com/apis/library/arcore) for the correct project in Google Cloud.
- If you have any API Key restrictions enabled, temporarily disable them.
- Ensure that the API Key listed in [your project's
  Credentials](https://console.cloud.google.com/apis/credentials) exactly matches the API Key used by your app, with no spaces or any other characters.