Remote procedure call (RPC) - Win32 apps (2024)

FAQs

Should I disable Remote Procedure Call RPC? ›

Microsoft recommends that you don't disable the RPC service.

A Remote Procedure Call (RPC) is a software communication protocol that one program uses to request a service from another program located on a different computer and network, without having to understand the network's details.

Remote Procedure Call (RPC) protocol is generally used to communicate between processes on different workstations. However, RPC works just as well for communication between different processes on the same workstation.

Either the client or the server can cancel an RPC at any time. A cancellation terminates the RPC immediately so that no further work is done.

Restart the RPC Server

Click on Run as administrator. Look for DCOM Server Process Launcher and double-click on it. Ensure that "Startup type" is set to Automatic and "Service status" is Running. If there is any discrepancy, set the "Startup type" to Automatic and click Start below "Service status."

You should catch RPCError exceptions and close sessions explicitly. After closing session explicitly, you can retry RPC by same client object. But retrying RPC is not recommended because you can not detect transport layer error which may recover by retrying.

Many Windows services leverage RPCs for communication, and many RPCs expose functions to end users. Depending on privilege levels and the security checks that are (or are not) performed when these functions are implemented, adversaries can abuse RPCs to perform many malicious actions.

What applications use RPC? ›

The most common RPC-based services are NFS (Network File System) and NIS (Network Information System). See the previous section for more information about NIS. The File Alteration Monitor (FAM) provided by the package fam is also an RPC service, and thus depends on portmap.

Remote Procedure Call (RPC) is a request-response protocol that one program can use to request a service from a program located in another computer in a same network without having to understand the network's details. It supports communication between Windows applications.

TL;DR: It's a critical process of windows, do not disable it. Microsoft Remote Procedure Call (RPC) defines a powerful technology for creating distributed client/server programs. The RPC run-time stubs and libraries manage most of the processes relating to network protocols and communication.

The client contacts the RPC-based server through the ports TCP 111 or UDP 135. The client tells the location server the unique RPC service number for the server it wishes to access.

Disabling this policy means RPC clients won't authenticate with the Endpoint Mapper Service, but they can still communicate with it on Windows NT4 Server. The recommended state for this setting is: Enabled.

A REST API is typically used in applications as it is easier for developers to understand and implement. However, RPC still exists and is used when it suits the use case better. Modern implementations of RPC, such as gRPC, are now more popular. For some use cases, gRPC performs better than RPC and REST.

Yes, you need RpcSs service. This service is rather vital. Practically everything depends on this service to be running.

Potential Drawbacks of RPC

There is no flexibility in the hardware architecture. Remote calls may not be as fast or reliable as local calls. Because the concept can be implemented in various ways, it cannot be standardized. RPC is prone to failure.