Certificate request error "Certificate not issued (Incomplete)"

When I tried to obtain Exchange 2010 certificate I bumped into the error. If you get the error similar to this one: Active Directory Enrollment Policy {04D0DAAD-B09E-4083-AF37-4D6131C40066} ldap: Certificate not issued (Incomplete) when you try to get certificate from Microsoft CA, check if your req file is encoded in Unicode. Open req file in notepad and save with encoding ANSI. Resubmit your request and see if error disappears.