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Microsoft IIS - Install Intermediate SSL Certificate

Last updated: 14/01/2016

This article shows you how to install root and intermediate SSL certificates, using the Microsoft Management Console on Windows Server.

  1. Open the Microsoft Management Console by clicking Start, then Run, type mmc and hit Enter.
  2. Click File in the top menu and select Add/Remove Snap-in....

  3. Select Certificates from the snap-in list and click Add.

  4. Select Computer account and click Next.

  5. Select Local computer and click Finish. Close the Add Standalone Snap-in dialog window and click OK in the Add/Remove Snap-in window.

  6. Return to the Management Console, open the Certificates tree, and right-click  Trusted Root Certification Authorities, then select All Tasks, then Import.... This will open the Certificate Import Wizard.

  7. Select Local machine and click Next.

  8. Click Browse... to select the root certificate's file from your drive, then click Next to go to the summary screen, and Finish to close the wizard. The CA's root certificate is now installed to the Windows certificate store.

  9. Next, install the intermediate certificate by right-clicking Intermediate Certification Authorities, and then choosing All Tasks and Import.... This will open the Certificate Import Wizard again. Proceed as with the root certificate above.

  10. Repeat step 9 if there is more than one intermediate certificate to install.
  11. Verify that the root certificate is correctly installed under Trusted Root Certification Authorities, and the intermediate certificate(s) under Intermediate Certification Authorities.
  12. Reboot the server to propagate the changes.