How can I troubleshoot the "ERR_SSL_PROTOCOL_ERROR" issue when connecting my website to a custom domain on Webflow?

Published on
September 22, 2023

Troubleshooting the "ERR_SSL_PROTOCOL_ERROR" issue when connecting a custom domain on Webflow

If you encounter the "ERR_SSL_PROTOCOL_ERROR" issue when connecting your website to a custom domain on Webflow, it means there is a problem with the SSL certificate configuration. SSL (Secure Sockets Layer) is a security protocol that encrypts the connection between a website and its visitors, ensuring that data transmitted is secure. Here are some steps to troubleshoot and resolve this issue:

  1. Verify SSL configuration: Check if SSL is properly configured in your Webflow project. In the Webflow Designer, go to the Project Settings, select Hosting, and ensure that the SSL option is enabled. If it's not enabled, activate it and republish your website.

  2. Update DNS settings: Confirm that the DNS settings for your custom domain are correctly configured. Check if the CNAME or A record points to the correct Webflow SSL IP address. You can find the correct IP address by going to the Webflow Designer, selecting Hosting, and clicking on the "Copy" button next to the SSL IP address.

  3. Clear cache and cookies: Clear your browser cache and cookies to ensure that you are pulling the latest DNS records and SSL certificate information. Sometimes, outdated records can cause SSL connection errors.

  4. Check SSL certificate: Verify the validity of your SSL certificate. Webflow provides free SSL certificates powered by Let's Encrypt for all custom domains. To check the SSL certificate, use an online SSL checker tool and enter your domain. It will verify if the SSL certificate is properly installed and valid.

  5. Generate a new SSL certificate: If you have verified that all settings are correct, but the issue persists, try generating a new SSL certificate in the Webflow Designer. In the Hosting settings, click on the "Configure SSL" button, and then click on "Generate a new certificate." This process might take a few minutes to complete.

  6. Contact Webflow support: If you have followed all the troubleshooting steps above and the issue persists, you may need to reach out to Webflow support for further assistance. They have the expertise to help you resolve any SSL configuration issues.

Remember, SSL certificate issues are typically related to misconfiguration or incorrect DNS settings. By following these troubleshooting steps, you should be able to resolve the "ERR_SSL_PROTOCOL_ERROR" issue and ensure a secure connection for your custom domain on Webflow.

Additional Questions:

  1. How do I enable SSL for my Webflow website?
  2. What is the process of setting up a custom domain on Webflow?
  3. Why is SSL important for website security?