Fix for Shutdown of reCAPTCHA V1

Security, Antivirus And Malware

In this article, I will discuss the solution for fixing the shutdown of reCAPTCHA V1.

Update your website’s reCAPTCHA version: The first step to fix the reCAPTCHA v1 shutdown issue is to update your website’s reCAPTCHA version. Google has released reCAPTCHA v2 and reCAPTCHA v3 as alternatives to v1, so make sure you implement the latest version.

Google’s Retirement of reCAPTCHA v1

Google reCAPTCHA logo

Google has retired reCAPTCHA v1, which means websites using this version will need to transition to reCAPTCHA v2 or an alternative solution. To fix the shutdown of reCAPTCHA v1 on your website, follow these steps:

1. Update your website’s code: Replace the old reCAPTCHA v1 code with the latest reCAPTCHA v2 code. This can usually be done by modifying the HTML of your webpages. Make sure to follow the documentation provided by Google to implement reCAPTCHA v2 correctly.

2. Test the implementation: After updating the code, test the new reCAPTCHA v2 on your website to ensure it is functioning correctly. Use both automated and manual testing methods to cover different scenarios and user behaviors.

3. Notify your users: Inform your website users about the transition from reCAPTCHA v1 to reCAPTCHA v2. You can do this through email notifications, website banners, or in-app messages. Explain the benefits of reCAPTCHA v2 and assure users of increased security and improved user experience.

Steps to Address the reCAPTCHA v1 Shutdown

reCAPTCHA v1 logo

  1. Upgrade to reCAPTCHA v2
    • Go to the Google reCAPTCHA website
    • Create a new site key and secret key for your website
    • Replace the old reCAPTCHA v1 code with the new reCAPTCHA v2 code
  2. Implement an alternative CAPTCHA solution
    • Research and choose an alternative CAPTCHA provider
    • Sign up for an account and obtain the necessary API keys
    • Replace the reCAPTCHA code with the code provided by the alternative CAPTCHA provider
  3. Update your website’s registration and login systems
    • Identify the areas in your website where reCAPTCHA v1 is used for registration and login
    • Modify the code to integrate the new reCAPTCHA v2 or alternative CAPTCHA solution
    • Test the registration and login systems to ensure they are working properly
  4. Inform users about the change
    • Create a notification or announcement on your website explaining the shutdown of reCAPTCHA v1
    • Provide instructions on what users need to do (e.g., complete the new reCAPTCHA v2 or alternative CAPTCHA)
    • Send out email notifications or newsletters to your users to inform them about the change

Available Versions of reCAPTCHA

reCAPTCHA logo

Version Description
reCAPTCHA V2 A newer version of reCAPTCHA launched in 2014. It includes a simplified user experience with just a checkbox to confirm if the user is a human or a bot.
reCAPTCHA V3 Introduced in 2018, reCAPTCHA V3 provides a completely invisible user experience. It uses advanced risk analysis techniques to determine if a user is a bot or a human without requiring any user interaction.
reCAPTCHA Enterprise A premium version of reCAPTCHA that offers additional features and support for high-volume usage. It is designed for businesses and organizations with more complex needs.

import requests
import json

def fix_recaptcha_v1_shutdown():
# Step 1: Retrieve reCAPTCHA v1 site key and secret key from your application or configuration
v1_site_key = "YOUR_V1_SITE_KEY"
v1_secret_key = "YOUR_V1_SECRET_KEY"

# Step 2: Generate a new reCAPTCHA v2 site key and secret key from Google reCAPTCHA admin console
v2_site_key = "YOUR_V2_SITE_KEY"
v2_secret_key = "YOUR_V2_SECRET_KEY"

# Step 3: Update your application's frontend code to use the new v2_site_key

# Step 4: Update your application's backend code to verify the new reCAPTCHA v2 response
# Assuming you are using Python and Flask framework for the backend
from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/verify_recaptcha', methods=['POST'])
def verify_recaptcha():
response = request.form.get('g-recaptcha-response')
if response:
# Step 5: Verify the reCAPTCHA v2 response with Google reCAPTCHA API
response ='',
data={'secret': v2_secret_key, 'response': response})
if response.status_code == 200:
result = json.loads(response.text)
if result['success']:
# Step 6: Proceed with normal application logic as the reCAPTCHA v2 response is valid
return jsonify({'message': 'reCAPTCHA v2 verification successful.'})

# Step 7: If reCAPTCHA v2 verification fails or no response is received, display an error message
return jsonify({'error': 'reCAPTCHA v2 verification failed.'}), 400

if __name__ == '__main__':

Again, this code is just an example to illustrate how you might handle the transition from reCAPTCHA v1 to v2. It is important to consult the reCAPTCHA documentation and follow the recommended guidelines for a proper implementation.

Introduction to reCAPTCHA v3 and reCAPTCHA v2

reCAPTCHA is a widely used tool to prevent spam and protect websites from malicious activities. With the shutdown of reCAPTCHA v1, it’s important to understand the newer versions available – reCAPTCHA v3 and reCAPTCHA v2.

reCAPTCHA v3 focuses on user behavior analysis to determine if a visitor is a human or a bot. It assigns a score to each interaction on a website, allowing developers to take appropriate actions based on the score.

On the other hand, reCAPTCHA v2, also known as “I’m not a robot,” presents users with a checkbox to confirm their human identity. It may sometimes require additional verification, like image recognition or puzzle solving, to further confirm the user’s authenticity.

To implement reCAPTCHA v3 or v2, you need to add the necessary code provided by Google to your website’s HTML. You can also customize the appearance of the reCAPTCHA widget using CSS.

Remember to configure a callback function to handle the response from reCAPTCHA and take appropriate actions based on the result.

By integrating reCAPTCHA into your website, you can effectively protect it from bots and ensure a secure user experience.

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