Open Internet Services Manager from the Administrative Tools. Right click on the website where you previously created a CSR and choose "Properties". Press the "Directory Security" tab and then click "Server Certificate" in the "Secure Communications" section.

When the wizard starts, choose "Process the pending request..." and press "Next". In the next screen, click "Browse" and then click the drop down box to choose "All Files *.*". Now, navigate to the folder where you stored the .p7b file and select it. Press "OK" and then click next. Verify that the port number is correct (customers who are renewing a certificate will not see this step). The default SSL port is 443. Finish the wizard and your certificate and intermediates will be installed.

Download the Trustwave intermediates here.

Move the file onto the Windows Server and complete the following three steps:

Double-click the xroot.crt certificate, press "Install Certificate", press "Next", and then choose "Place all certificates in the following store". Click "Browse", and then "Show Physical Stores". Click the plus (+) sign next to "Trusted Root Certification Authorities" and click "Local Computer" underneath it. Click "OK", then "Next" and then "Finish".

Installing the Root & Intermediate Certificates:

Firstly, you need to download the CA certificates (both Root CA certificate and Issuing CA certificate) as individual files

• DER format Root CA certificate
• DER format Issuing CA certificate

To install these certificates, you must first enable the Certificates Snap-in for the Microsoft Management Console (mmc)

1. Click the Start Button then select Run and type mmc
2. Click File and select Add/Remove Snap in
3. Select Add, select Certificates from the Add Standalone Snap-in box and click Add
4. Select Computer Account and click Next
5. Select Local Computer and click Finish
6. Close the Add Standalone Snap-in box, click OK in the Add/Remove Snap in
7. Return to the MMC

To install the Root CA Certificate, we use this snap-in:

1. Right click the Trusted Root Certification Authorities, select All Tasks, select Import.
   This starts the certificate import wizard.
   Click Next.
2. The File to Import dialog is shown.
   Locate the Root CA Certificate file you downloaded earlier and click Next.
3. When the wizard is completed, click Finish.

To install the Issuing CA Certificate:

1. Right click the Intermediate Certification Authorities, select All Tasks, select Import.
   
2. Complete the import wizard again, but this time locating the Issuing CA Certificate when prompted for the Certificate file.

When both certificates have been installed:

• Ensure that the Root CA certificate appears under Trusted Root Certification Authorities
• Ensure that the Issuing CA certificate appears under Intermediate Certification Authorities

Installing your IIS SSL Certificate:

1. Select Administrative Tools
2. Start Internet Services Manager