Error code: SSL_ERROR_NO_CYPHER_OVERLAP

• • Outdated Browser: Update Firefox to the latest version, as older versions may lack support for newer encryption methods.
  • Disabled TLS/SSL Settings: Check about:config in Firefox to ensure TLS 1.2 or TLS 1.3 is enabled, as disabling these can cause the error.
  • Website Issues: The website may be using outdated security (e.g., RC4 or SSL3), which requires contacting the site administrator to upgrade their server security
    .

Immediate Troubleshooting Steps:

1. Update Firefox: Mozilla Support.
2. Try another browser: Check if the site works in Chrome or Edge.
3. Check about:config: Search for security.tls.version.min and ensure it is set to a reasonable default (usually 2 or 3).
4. Clear browser cache. 
   Reddit +4

If the error persists on a specific website, it is almost certainly a server-side issue where the website's security configuration is too old for modern browsers. 

Cloudflare Community +1

It's still listed as not secure.

Most likely, you tried to add Cloudflare to secure your website and you've failed to set up the DNS record as directed. Review the platform options below and review your installation to ensure it's correct.

You can SSL your Sitebuilder Plus website by following this article:
Can I Secure My Homestead Website With HTTPS?
https://community.homestead.com/conversations/sitebuilder-plus/can-i-secure-my-homestead-website-with-https/5f2a9b1658180958845a60de
If you're having trouble with the Cloudflare setup, you can always call for assistance at 1-800-710-1998.

Make your Websitebuilder website secure?
Follow the steps: https://homesteadssl.com/. If you're having trouble with the Cloudflare setup, you can always call for assistance at 1-800-710-1998.