Next to install GeoTrust Global CA Certificate as an example

1. Save the server certificate code at the bottom of the email (do not remove the middle horizontal line from the beginning line to the end line in the email, the entire certificate is issued by the manufacturer) locally and with a. cer/. crt file extension, and then open it to select the encryption shell extension.

2. In the certificate path, click the intermediate certificate (RapidSSL sha256 CA is shown here), and then click View Certificate ->Details ->Copy to File ->Next ->Select Base64 encoding ->Next ->Browse and select the path to save the file and name the file name to save.

3. Finally, export the intermediate certificate file and install it to your server. The root certificate is exported in the same way (GeoTrust Global CA is shown here).