Windows Certifcate Services : The revocation function was unable to check revocation because the revocation server was offline
February 15th, 2008check your CA CRL or try :
certutil –setreg ca\CRLFlags +CRLF_REVCHECK_IGNORE_OFFLINE
check your CA CRL or try :
certutil –setreg ca\CRLFlags +CRLF_REVCHECK_IGNORE_OFFLINE