The Network Device Enrollment Service failed trying to retrieve a certificate from the certification authority (CA). Verify ...

The Network Device Enrollment Service failed trying to retrieve a certificate from the certification authority (CA). Verify that the CA service is running. Use the Certification Authority management console to verify that the Network Device Enrollment Service account has Read permissions on the CA service. Verify that the serial number specified in the GETCERT request is correct, and that the CA service has successfully created a certificate with the specified serial number. The error returned was (%1).  %2