Create a Certificate Request using Active Directory Certificate Services
Create a Certificate Request using Microsoft Management Console
Login to the Server where you want a certificate to be requested.
Open Microsoft Management Console (MMC) using mmc command. Make sure that you are running mmc as administrator. Click Add/Remove Snap-in
Select Certificates and click Add to add to the Selected snap-ins.
Select Computer account in Certificates snap-in.
Expand Certificates in Console Root.
Right click Personal -> All Tasks -> Advanced Operations -> Create Custom Request ..
Select Web Server in Template select option.
Click Details down arrow to configure options.
Click Properties and configure required properties.
Give a file name to save and click Finish.
Now we have completed a request. Let us generate the certificate if Active Directory Certificate Authority Web Enrolment is configured in your domain.
Login to the webserver (in my case it is http://dc01.winadmin.org/certsrv/Default.asp).
Click Request a certificate and then click advanced certificate request.
Click the second option “Submit a certificate request by using a base-64-encoded CMC or PKCS #10 file, or submit a renewal request by using a base-64-encoded PKCS #7 file.”
Now open the request file with a notepad and copy text. Paste in the field Base-64-encoded certificate request. Select Certificate Template as Web Server and click Submit button.
The certificate is now ready to download.