In Windows 2003 and older versions of Windows, the Remote Procedure Call (RPC) Locator service manages the RPC name service database. In Windows Vista and newer versions of Windows, this service does not provide any functionality and is present for application compatibility. This is a legacy service that has no value or purpose other than application compatibility for very old software. It should be disabled unless there is a specific old application still in use on the system that requires it. Default: Manual. Counter Measure: The recommended state for this setting is Disabled. Potential Impact: No impact, unless an old, legacy application requires it. Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\System Services\Remote Procedure Call (RPC) Locator (2) REG: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RpcLocator!Start