Why Am I Getting the \'Daily Limit for Unauthenticated Use Exceeded\' Error in Google Plus Login?

Google Plus Login Error: "Daily Limit for Unauthenticated Use Exceeded"

When attempting to authenticate users through Google Plus on a web application, developers may encounter the error "Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup." This can be a persistent issue, despite following Google's setup documentation meticulously.

Solution:

The root cause of this error lies in the activation status of the Google API within the Google Developer Console. It is essential to verify that this API is enabled for the project associated with the API key used in the authentication process.

To resolve the issue:

1. Navigate to the Google Developer Console: https://console.developers.google.com/
2. Select the project associated with the API key.
3. Under "APIs & Services," expand the "APIs" section.
4. Search for the "Google API" and ensure that its status is set to "ON."

After activating the Google API, it is crucial to obtain a fresh access token and reattempt the authentication process. A delay of a few minutes may be necessary for the changes to take effect.

If the error persists, check the following:

• Ensure the correct API key and scopes are being used.
• Validate the validity of the access token.
• Verify the server-side code is properly handling the access token.

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