Error 1722: The RPC server is unavailable. This error message may occur if the File and Printer Sharing for Microsoft Networks component is not enabled on the remote computer. Troubleshooting RPC. The process of an RPC client connecting to an RPC server can be broken down into four phases. device in the middle between the RPC Client and RPC Server will be resetting the connection attempt. In the client side trace it will appear as if the server sent the TCP Reset while the trace from the server indicates the client is the source of the TCP Reset.