Understanding Remote Procedure Call on Windows: A Comprehensive Guide

Remote Procedure Call (RPC) is a core technology in the Windows operating system that facilitates the creation of distributed client/server programs. It provides libraries that enable Windows to run and manage various network and communication protocols.

Where is Remote Procedure Call Used?

Initially, RPC was designed to enable communication between computers on the same network. However, in modern operating systems like Windows 10 and 11, RPC is also used by applications running on the same machine to communicate and exchange instructions. It has evolved into an interprocess communication method for client-server-based apps. This is because multitasking is now the norm, and applications constantly need to communicate with each other to perform complex tasks. Hence, RPC serves as the backbone of the Windows system.

How Does RPC Work?

In the RPC model, a client process makes a request to a server process, and they engage in a back-and-forth exchange of replies to fulfill the request. This interaction allows different applications and components to work together seamlessly. For example, when you use Microsoft Word to print a document on a Windows computer, RPC enables the Word app to communicate instructions to the printer over the network.

Should You Disable RPC?

No, you should not disable RPC on your Windows computer. Critical system apps and services rely on RPC for communication and execution of actions. Disabling RPC can lead to various functionality errors, and your computer may not perform as expected. Additionally, many services on your computer depend on RPC, as indicated by the number of services listed when you use the command sc enumdepend rpcss 12500 in the command prompt.

Why are RPC Service Options Grayed Out?

Microsoft has grayed out certain options in the RPC services menu to prevent accidental changes. These options, such as Log On and Recovery, are restricted to ensure the stability and security of the RPC service.

What About “The RPC Server is Unavailable” Error?

If you encounter the “RPC Server is unavailable” error, disabling RPC is not the solution. As mentioned earlier, RPC is crucial for the functioning of your Windows computer, and disabling it is not recommended. Instead, you can try the following steps to resolve the error:

  1. Open the Services app using Windows Search.
  2. Ensure that the Remote Procedure Call (RPC) status is set to Running and the Startup Type is set to Automatic. If not, contact your administrator or modify the settings accordingly.
  3. If possible, click the Start button (if not grayed out) under the General tab to start the RPC service.

Additionally, flushing the DNS cache on your Windows computer may also help resolve the error.


Remote Procedure Call (RPC) is a fundamental technology in the Windows operating system, enabling communication between applications and services. Disabling RPC is not recommended as it can lead to critical functionality errors. Understanding the role of RPC and its significance in the Windows ecosystem is essential for troubleshooting and maintaining a stable system.