hi I am trying to implement autoenroll for certs on Cisco devices. I have deployed enterprise server 2008 R2 SP1 and using NDES with it. Whenever a request is generated from Cisco for renewal, CA rejects it with the error "The password in the certificate request cannot be verified. It may have been used already. Obtain a new password to submit with this request." I know renewal can be requested using previous certificate rather than using the challenge password but not sure if I am missing anything or is there some know issue which requires hotfix.