The following instructions allow a user to request a certificate from the AD CAs. 

Create the request

  1. Open an MMC window (start → run "mmc.msc")
  2. Add the Certificates snap-in
  3. Expand Certificates then right click on Personal
  4. Select All Tasks then Request New Certificate...
  5. Click Next then select Active Directory Enrollment Policy
  6. Click Next then check the box next to the name of the desired template
  7. Expand Details and select Properties
  8. On the General tab, set a friendly name for certificate
  9. On the Subject tab, set the following as appropriate:
    1. A subject name of type common name with the name on the certificate
    2. An alternative name of type DNS with the name on the certificate
    3. All other required additional names of type DNS with the subject alternate names on the certificate
  10. On the Extensions tab, set the following as appropriate:
    1. Set the key usages to digital signature and key encipherment
    2. Set the extended key usage to server authentication
  11. On the Private Key tab, set the following as appropriate:
    1. Set the key options to a key size of at least 2048 and set Make private key exportable
  12. Click OK then click Enroll

Export the keypair (optional)

  1. Open an MMC window
  2. Add the Certificates snap-in
  3. Expand Certificates then Certificate Enrollment Requests then Certificates
  4. Right click on the certificate to export and select All tasks... then Export...
  5. Click Next then select Yes, export the private key
  6. Click Next twice
  7. Check the Password box and set a complex password
  8. Click Next 
  9. Specify a file name for the certificate request
  10. Click Next then click Finish