Reissuing a certificate means the certificate is issued again, (well) before its expiration date, using a new CSR. The expiration date of the certificate will remain the same after it has been reissued. All types of SSL certificates can be reissued.

What is not Possible?

  • It is not possible to change the expiration date or type of certificate by reissuing it.
  • It is not possible to reissue a digital signature. The only solution here is to apply for a new signature.
  • It is not possible to change the Common Name (CN) registered in certificates issued by Symantec, GeoTrust, Thawte or GlobalSign.

What is Possible?

  • It is possible to change the company name and/or data that is registered in the certificate.
  • It is possible to change or add Subject Alternative Names (SAN's) to a multi-domain certificate (all brands).
  • It is possible to change the Common Name in all types of certificates as long as they are produced by Comodo.


  1. Create a new CSR
  2. Apply for a reissue by:
    • Creating a new certificate application while logged into the account used to apply for the current certificate. The system will notice that the certificate has already been issued for your web server and process the application as a reissue.
    • Log onto the Control Pane, find the certificate you wish to reissue and click the option Reissue.
  3. Install the new certificate.

You have a Comodo certificate and wish to change the Common Name (CN)? To accomplish this, please apply again and enter 'Reissue:[Domain name current certificate]' in the 'payment reference' field. Please make sure you are logged into you account while applying. If this is not the case, the system will create a new account for you, making it impossible to complete the reissue procedure.



A certificate reissue is free of charge. In case of a multi-domain certificate, a reissue is free of charge as long as the number of (sub) domains included in the certificate remains the same. For adding additional (sub) domains to the certificate, the standard cost per domain for the remaining validity of the certificate will be charged.


  • You have a Comodo multi-domain, valid for three years, in which three domains have been included.
  • During the second year, you wish to have the certificate reissued and add one additional domain to the certificate. For including the fourth domain, you will receive a bill for the remaining 2 years the certificate will be valid; in this case €75.

Why Reissue?

There can be several reasons to reissue a certificate:

  • You are switching to a new provider or server and it is not possible to export the certificate and private key from the old environment.
  • You have lost your certificate, possibly because of a server crash.
  • You want to change the data registered in the certificate, possibly because your company data has changed.
  • You have a multi-domain, and want to add or change the domains included in it.


Our SSLCheck will examine your website's root and intermediate certificates for correctness and report any potential issues