The CRL could not be downloaded for certificate: Subject: %1, Issuer: %2, Extended Error Code: 3 Cause: This could happen ...

The CRL could not be downloaded for certificate:

Subject: %1, Issuer: %2, Extended Error Code: 0x%3
Cause: This could happen if the CA is unreachable or the certificate did not specify the CDP location. It could also happen if the CA was overloaded.
Resolution:
You should contact the issuer and download/install the CRL.