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Certificate Support

Telephone and Email Support

+1 (888) 266-6361 (US)

+1 (703) 581-6361 (International)

Customers can also send inquiries to

Please have your order number available.

Ticketing System and knowledgebase

Comodo's certificate knowledge base contains answers to most SSL support questions and can be found at > knowledgebase > certificates

SSL customers also receive priority web-based support through our online ticketing system. To enroll:

  • Register an account at
  • Select 'Submit a ticket' then choose 'Certificates' as the department
  • Most tickets are answered within one hour