Enables identity revocation services for PKI (certificate) based services such as secure e-mail smartcard logon, secure web servers, etc as an online request and response query process. If this service is stopped or disabled, revocation services may not be available for PKI (certificate) applications thereby generating authentication or application failures. Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\System Services!Online Responder Service (2) REG: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\ocspsvc!Start