AutoSSL is a powerful feature in WHM cPanel that automatically secures websites with SSL certificates. However, there may be instances where AutoSSL renewal encounters issues. This knowledge base provides comprehensive information on common reasons for AutoSSL renewal failures and how to troubleshoot them in WHM cPanel.

Understanding AutoSSL Renewal

What is AutoSSL?

AutoSSL is a feature in WHM cPanel that automatically installs and renews SSL certificates for websites, ensuring secure connections.

Importance of AutoSSL Renewal

1. Continuous Security: SSL certificates encrypt data transmitted between a website and a visitor's browser, ensuring secure connections.

2. Avoiding Security Warnings: Expired SSL certificates can lead to security warnings for visitors, potentially deterring them from using the site.

Common Reasons for AutoSSL Renewal Failures

1. DNS Resolution Issues

• Cause: The server may be unable to resolve the domain's DNS records, preventing AutoSSL from obtaining a certificate.

• Solution: Ensure that DNS records are correctly configured and that the domain resolves properly.

2. Rate Limiting by Let's Encrypt

• Cause: Let's Encrypt, the certificate provider used by AutoSSL, has rate limits on certificate issuance. Exceeding these limits can result in renewal failures.

• Solution: Wait for the rate limit to reset or consider using a different certificate provider.

3. Firewall Restrictions

• Cause: Firewall rules may be blocking the server's access to Let's Encrypt's servers for certificate renewal.

• Solution: Check firewall settings to ensure that outbound connections to Let's Encrypt servers are allowed.

4. Incorrect DNS Records

• Cause: Incorrect or missing DNS records (such as missing CAA records) can prevent AutoSSL from obtaining a certificate.

• Solution: Verify and correct DNS records for the domain in question.

5. Certificate Revocation

• Cause: Let's Encrypt may revoke certificates for various reasons, including suspected compromise or policy violations.

• Solution: Check the Let's Encrypt account for any notifications or instructions regarding certificate revocation.

Troubleshooting AutoSSL Renewal Failures

1. Review AutoSSL Logs

1. In WHM, navigate to Home > SSL/TLS > Manage AutoSSL.

2. Click on Logs.

3. Review the logs for specific error messages or warnings related to AutoSSL renewal.

2. Force a Manual Renewal

1. In WHM, navigate to Home > SSL/TLS > Manage AutoSSL.

2. Click on Run AutoSSL For All Users.

3. Monitor the process for any error messages.

3. Verify DNS Settings

1. Ensure that DNS records for the domain are correctly configured and resolving properly.

2. Use DNS tools to verify that the domain's records are correct and accessible.

4. Check for Firewall Restrictions

1. Review firewall rules to ensure that the server can connect to Let's Encrypt servers.

2. Verify that outbound connections to Let's Encrypt are not being blocked.

5. Contact Let's Encrypt Support

If all else fails, consider contacting Let's Encrypt support for assistance with specific certificate issues.

Best Practices for AutoSSL Renewal

1. Regularly Monitor AutoSSL Status:

   • Keep an eye on the AutoSSL status to catch and address any renewal failures promptly.

2. Maintain Proper DNS Configuration:

   • Ensure that DNS records are accurate and up-to-date to facilitate certificate issuance and renewal.

3. Stay Informed about Rate Limits:

   • Familiarize yourself with Let's Encrypt's rate limits and plan certificate issuance accordingly.

Conclusion

AutoSSL renewal failures can occur due to various reasons, but with proper troubleshooting and best practices, they can be addressed effectively. By following the guidelines provided in this knowledge base, you can efficiently identify and resolve AutoSSL renewal issues in WHM cPanel, ensuring the continued security of your websites.