How can I resolve the ERR_SSL_PROTOCOL_ERROR issue on my Webflow site that suddenly stopped working, even though I haven't made any changes to the DNS settings and the site has been functional for 9 months?

TL;DR
  • Verify SSL settings and enable if necessary; ensure your domain's A and CNAME records point to Webflow.
  • Check SSL certificate validity using an external tool; consult your domain provider if needed.
  • Republish your site and clear browser/DNS cache to refresh settings.

Your Webflow site is displaying an ERRSSLPROTOCOL_ERROR message, indicating an issue with the SSL certificate or server setup. Here’s how to address this problem step-by-step:

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1. Verify SSL Certificate Settings

  • Go to Project Settings in your Webflow dashboard.
  • Navigate to the Hosting tab.
  • Check if the SSL option is turned on. If not, enable SSL and republish your site.

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2. Confirm Domain Configuration

  • Ensure your domain is correctly configured with the necessary A records and CNAME record for Webflow.
  • A records: Should point to Webflow's IP addresses (a) 75.2.70.75 and (b) 99.83.190.102.
  • CNAME record: Should be set to point to proxy-ssl.webflow.com.

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3. Check SSL Certificate Validity

  • Use an external tool, like SSL Labs, to scan your domain and verify if the SSL certificate is valid and correctly configured.

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4. Contact Your Domain Provider

  • If everything seems correct in Webflow, contact your domain provider to ensure there are no DNS propagation issues or expired SSL certificates.

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5. Republish Your Webflow Site

  • Go back to your Webflow dashboard and republish the site to ensure all settings are refreshed.

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6. Clear Browser and DNS Cache

  • Clear your browser cache and DNS cache to rule out cached configurations causing the error.

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Summary

To resolve the ERRSSLPROTOCOL_ERROR on your Webflow site, verify your SSL settings, confirm your domain's DNS configuration, check the validity of your SSL certificate, republish your site, and clear any relevant caches. If issues persist, consult your domain provider.

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