Hi, I have a Active Directory Certificate services installed in one of the servers. Later I deleted the server. Now a error log is being generated in all the servers. The details of the error log is given below. Certificate enrollment for local system failed to enroll for a Domain controller certficate with request ID N/A from xxxx\KingRootCA. ( The RPC server is unavailable ) Another error is Automatic certficate enrollmnt for local system failed. The RPC server is unavailable. I think both the above errors are related. Can anyone help me in resolving this errors?? Regards,