I am covering the steps on how to enable “Active Directory Certificate Service” in Windows 2008
1. Open the “Server Manager” and select “Active Directory Certificate Service” in your Domain Controller
2. Click Next :
3. Click Next and select the services like in the below screen shot.
4. Here I am selecting Enterprise as my setup type , click next
5. Select “Root CA” and click next.
6. Select “Create a new private key” and click next.
7. Give the names and click next (remember this will be Certificate Authority name)
8. Set the validity period and click next.
9. Configure the certificate database location and click next.
10. Choose a certificate for SSL encryption (use the recommended)
11. Click Next
12. After enabling web server it will automatically select the required services.
13. Now we are done with manual selections, just click Install and it will install the selected roles and services.
Once we are done with the installation we can see the AD Certification service in the server manager.
Once it is done, for the trust to work we must need to take the certificate from the DC and need to import it in the local (SharePoint server where we are trying to add a domain certificate )Certification Authorities (Root) certificate store .
For that first we need to take the certificate from the machine which has the AD certificate Service role enabled. By default it will be located under here: (Extension of the file will be .crt)
Once you got the certificate now you can go ahead and import it in the root certification authorities folder. For that do the following.
1. Start –> run –> type “mmc”
2. It will open a console window, from the file menu select “Add/Remove Snap in”
3. Select the “Certificates” snap in and add it.
4. Once it is done then import the certificate to the “Trusted Root Certification Authorities”
If you didn’t do it then you may get the below error once you try to create a domain certificate in IIS 7.
“A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider. 0x800b0109”