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Installation of an SSL Certificate on Microsoft® IIS 5.x / 6.x

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Installing a certificate on Microsoft® IIS 5.x / 6.x

You will have received your certificate file from us, usually named 'your_domain_com.cer'. Alternatively, you may have received it as several files: 'your_domain_com.crt' and intermediate certificates UTNAddTrustServer_CA.crt and NetworkSolutions_CA.crt.  The root certificate AddTrustExternalCARoot.crt may also be provided.

If you received a single file with a .cer extension, you only need follow the first half of the instructions. Otherwise, please follow the instructions completely.

Copy the file(s) you received to the server.

  1. Log in to the server. Go to 'Control Panel' > 'Administrative Tools' and double-click 'Internet Services Manager'.


  1. Right-click on the website you wish to install the certificate on, and select 'Properties'. From the window that appears, click the 'Directory Security' tab.


  1. Click the 'Server Certificate' button to begin the Certificate Wizard. Select the option 'Process the pending request and install the certificate'. Click 'Next'.


  1. Browse to the location of the certificate file. This is the file with your domain name within the filename. Click 'Next'. 
  2. Check the summary information screen, and click 'Next'. Click 'Next' or 'Finish' to complete the wizard. 
  3. The certificate should now work, although it can sometimes require a restart of IIS to bring the new certificate into effect. 

Installing the Intermediate Certificates

  1. Click the 'Start' menu, and choose 'Run'. Enter the command 'mmc' and click 'OK'.


  1. Click the 'File' menu, and select the 'Add\Remove Snap-in' option.


  1. From the pop-up window, click the 'Add' button.


  1. Choose 'Certificates', click the 'Add' button.


  1. Change the setting to 'Local Computer'. Click 'Next'. This step is extremely important!


  1. Choose 'Local Computer'. Click 'Finish'. Click 'Close' in the 'Add Standalone Snap-in' window, and 'OK' in the remaining window.


  1. On the left-hand side, expand the folder for 'Intermediate Certification Authorities'. Right-click on the 'Certificates' sub-folder, selecting 'All Tasks' then clicking 'Import...'.
    This will start the Certificate Import Wizard. Click 'Next'.


  1. When prompted to choose a file, select the UTNAddTrustServer_CA.crt file. Click 'Next', 'Next' and then 'Finish' to complete the wizard. 
  2. If required, repeat steps 7 and 8 with the NetworkSolutions_CA.crt files. 

The installation should be performed on exactly the same server and site that the CSR was generated upon.

The Intermediate Certificates need only be installed once per physical server.