Knowledgebase

First make sure that you have registered your email address on our support site. Then follow the instructions below: In order to change the email address associated with your Comodo account you will need to send a request from the email currently associated with the account to accountchanges@comodo.com. If you are unable to send from the email address which we currently have on record then the new email address for the account must be at a domain which is currently associated with the a...
The total size of attachments sent to support, e.g., screenshots, must be limited to less than 5 megabytes in size. As an example, a user may submit 3 attachments of 1 megabytes each in the same email, but may not submit 3 attachments of 2 megs each in the same email. This is because the latter example totals 6 megabytes in attachments, which is over our 5 megabytes limit. Also note that some email clients may attach more information to the file(s) you are attaching. As a result, you may ...
SHA-2 SHA-1 (Legacy) Product Certification Path (Hierarchy) Certification Path (Hierarchy) EV [ inc. EV SGC & Multi-Domain ] * UserTrust / AddTrust External Root * COMODO RSA Certification Authority * COMODO RSA Extended Validation Secure Server CA * END-ENTITY/DOMAIN CERTIFICATE Download Files [https://support.comodo.com/index.php?/Default/Knowledgebase/Article/View/977/108/extended-validation-sha-2] * UserTrust / AddTrust External Root * COMODO Certifica...