Alternative method to disable Certificate Propagation service

Apart from disabling the Certificate Propagation service under Vista/7 using the Services MMC, you can do the same by modifying the registry: under HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CertProp, set the REG_DWORD value CertPropEnabled to 0.This will forbid the service from starting until you set it again to 1.