---
title: "Multidomain certificate reissue"
url: "https://help.internetx.com/en/tls-ssl-smime/reissue-multidomain-certificates/"
lang: "en"
section: "TLS/SSL & S/MIME"
---

# Multidomain certificate reissue

## When does a new certificate have to be reissued?

The reissue of a certificate may become necessary if the server changes and therefore a new [CSR key (Private Key)](/en/tls-ssl-smime/csr/) is required or if the Private Key is lost. The pure reissue is free of charge. The duration and data of the certificate will not be changed during a reissue.

For multidomain certificates, you can use the reissuance feature to add additional domains to the certificate if the limit has not yet been reached. This will incur costs, which can be found in the price list.

Please note that all newly added domains must be verified.

## Step 1: Reissue a certificate in SSL Manager

-   Click **Certificate Management** in the **TLS/SSL Certificates** menu group.
-   Select the affected certificate in the list.
-   Click the **Reissue Certificate** button in the toolbar.  
    In the main window the form with all data of the certificate opens.
-   Change CSR key:  
    Delete the existing CSR key and insert the new one.  
    Note that when copying the CSR key, mark the first line  
    \-----BEGIN CERTIFICATE REQUEST----- and the last line  
    \-----END CERTIFICATE REQUEST----- including the lines.
-   Always click the **Check CSR Key** button at the end, even if you do not want to replace the CSR key.
-   Select the **Enter additional Domains** check box.
-   Enter or delete the desired additional domains.
-   Confirm the note for **GDPR**.
-   Click on **Submit** to start the reissue.

You can use a DigiCert tool to check the correctness of the CSR key beforehand. [https://ssltools.digicert.com/checker/views/csrCheck.jsp](https://ssltools.digicert.com/checker/views/csrCheck.jsp)

All newly added domains are billed with the term of the original certificate.

## Step 2: Change the certificate on the server

Change the certificate (Server CRT) and the intermediate certificate (CA CRT) from the certificate administration on the corresponding server.

## Step 3: Tracking the order

In the [Order History](/en/tls-ssl-smime/tracking-certificate-orders/) you can track all current and completed orders.