Step 1 – To get started, download the certificate file of 'CA.crt' by logging into Certificate Authority account and save it to your desktop.
Step 2 – Next, double-click on the certificate. This step will open the certificate, as shown in the image below:
Step 3 – Click on 'Install Certificate…' button at the bottom of the window (as shown in the image above). This step will initiate the certificate import wizard. Now, click 'Next'.
Step 4 – From the options given in the wizard, select the option of 'Place all certificates in the following store' as shown in the image below and click on the 'Browse' button.
Step 5 – Click on 'Show physical stores' box and expand the Intermediate Certification Authorities folder. Now, select the underlying Local Computer folder and click on 'OK'. After that, you need to click on Next > Finish.
Step 6 – With this step, your intermediate certificate is installed. You may need to restart the server.