| Event Id | 21 |
| Source | Microsoft-Windows-CertificationAuthority |
| Description | Active Directory Certificate Services could not process request %1 due to an error: %2. The request was for %3. |
| Event Information | According to Microsoft : Cause : This event is logged when Active Directory certificate service could not process request. Resolution : Correct problems that prevent certificate requests from being processed To identify and resolve problems that can block certificate request processing, you should: 1.Confirm the certificate chain for the certification authority (CA). 2.Generate and publish new certificate revocation lists (CRLs). 3.Confirm the configured CRL distribution points. |
| Reference Links | Event ID 21 from Source CertificationAuthority |
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