Automatically install certificates with a single click Yes
Quickly generate and submit CSRs Yes
SSL discovery tool locates all existing certificates on your network Yes
View and manage your Comodo certificate orders Yes
Purchase certificates using in-app ordering Yes
Easily renew and replace certificates Yes
SSL analyzer checks certificates are installed correctly Yes
Apache Support Yes
IIS Support Yes
Remotely manage certificates from any browser Yes
Built-in support chat Yes
Alerts when certificates are due to expire Yes
Agentless management option Yes
Manage and control multiple servers Yes
  • You have placed at least one order for a Comodo certificate (recently or in the past)
  • Your websites are running on Apache web server on Linux (CentOS, Fedora, Ubuntu or Debian)
  • Install the certificate controller software on any Windows or Linux machine on your network
  • Once the controller is installed, use the S3 portal to add servers, view orders and manage/install certificates

Login and Get Started

Yes. Comodo also offers a standalone utility which allows you to manage certificates on Apache and IIS servers.

The utility shares many of the features of S3 but cannot manage multiple servers, does not have built-in chat support or expiry reminders and has no option for agentless management.

We recommend you use the S3 utility because of it's more flexible deployment options and to benefit from its larger feature set. However, we will retain availability of the utility in the short term for exsiting users and for those who prefer a software GUI.

Download Utility

For step-by-step guide, please see the following help page:
Comodo S3 web portal guide

  • If your certificate has an auto-installer status of 'Installed' then you can check installation status in S3 as follows:
    • Select 'SSL Tools' in the SSL Management drop-down
    • Enter your domain name and port (default = 443)
    • Click 'Basic SSL Check' or 'Advanced SSL Check'

      Comodo Server Security Server

    • 'Basic SSL Check' shows basic certificate information and is useful for quickly identifying the validity, type and issuer of the certificate.
    • 'Advanced SSL Check' shows the basic information plus details about web-server configuration, including any protocol problems and whether the web server has the correct cipher suites.
  • For live certificates, another important test is to simply visit the https version of your website using a variety of browsers (Firefox, Chrome, Internet Explorer etc). If the connection is successful and the browser does not display an error message, then your certificate is installed correctly.
  • Comodo also offer a very detailed SSL analyzer at

The tools invoke the local crypto module on your server to generate your CSR and store your public/private key pair. This is exactly the same as if you'd generated the CSR manually using OpenSSL or the native IIS MMC snap-in. Your private key never, ever leaves your webserver.

Via the web portal:

  • Existing customers should log-in and click 'New Order'
  • You can obtain certificates for domains discovered on your network by selecting 'Buy Certificate' in the lower pane.
  • Click here if you'd like more help with this.

Via the software utility:

  • Existing customers should log-in and click 'Certificates' > 'Buy Certificate'
  • Non-customers can click 'Buy Certificate' right from the start-up dialog
  • After issuance, you can use the utility to auto-install and manage your certificate going forward.
  • Click here if you'd like more help with this.

Website Purchases

  • To view and purchase Comodo SSL certificates, please visit
  • After issuance, you can use the web-portal or utility to auto-install and manage your certificates going forward.

Phone and Email Support

For assistance with SSL certificates and the auto-installer, call
+1 (888) 266-6361 (US) or
+1 (703) 581-6361 (International)
Email -
In all cases, please have your certificate order number ready.

Knowledge Base

Answers to many common questions regarding SSL issues can be found in the knowledgebase at

CSR and Certificate Installation Documents

Comodo also provide CSR and installation guides for a wide-range of webserver types:

CSR guides -

Installation guides -

Live Chat Support

To begin a chat support session with a Comodo technician:

  • Visit
  • Click the 'Live Chat' icon on the home page
  • Select 'SSL Support' as the chat type
  • Please make sure to have your certificate order number ready

Support Tickets

To submit a support ticket:

  • Visit
  • Register for a support account if you do not already have one
  • Click 'Submit a Ticket'
  • Select 'Certificates' then click 'Next'
  • Describe your problem
  • Note - make sure to include your order number with the ticket

Sales Enquiries


Descriptions of all settings and a step-by-step tutorial that shows you the process from start to finish

Start managing your certificates
Server Security Server