HKEY_RPC is an RPC context handle as specified in [MS-RPCE]. It represents the server context for the operations of a client on a key in the cluster registry. An HKEY_RPC is obtained as specified in sections 18.104.22.168.29, 22.214.171.124.30, and 126.96.36.199.31.
This type is declared as follows:
typedef [context_handle] void* HKEY_RPC;