Reloads changes to server configuration files without stopping the service. Changes you have saved to the configuration file do not affect the service until you reload the settings or restart the service. (Some changes require a restart. For a list of these commands, see Save, Reload, and Restart on Windows.)
Reloading the configuration also clears the internal in-memory caches used for downloading certificates and CRLs. Although certificate and CRL lifetimes are honored by the cache, it might be necessary to clear these manually if a certificate or CRL has been updated at its source before it has expired.