To install a certificate chain

   1: Click Start, and then click Run.

   2: In the Open box, type mmc, and then click OK.

   3:On the File menu, click Add/Remove Snap-in.

    4: In the Add/Remove Snap-in dialog box, click Add.

    5: In the list of Available Standalone Snap-ins, select Certificates.

    Click Add.

    6:Select Computer account, and then click Next.

    7:In the Select Computer dialog box, ensure that Local computer (the computer this console is running on) is selected, and then click Finish.

    8:Click Close, and then click OK.

    9:In the left pane of the Certificates console, expand Certificates (Local Computer).

   10: Expand Trusted Root Certification Authorities.

    11:Right-click Certificates, point to All Tasks, and then click Import.

    12:In the Import Wizard, click Next.

   13: Click Browse, go to the location where you saved the certificate chain, select the .p7b file, and then click Open.

    Click Next.

   14: Accept the default value Place all certificates in the following store. Under Certificate store, ensure that Trusted Root Certification Authorities appears.

   15: Click Next.

   16: Click Finish.