What Is RPC Server Is Unavailable Error? How to Fix It Effectively

RPC Server Is Unavailable Error is easier to understand when the core ideas are explained in practical terms. This guide covers what it means, how it works, why it matters, and the main details you should know.

What Is RPC Server Is Unavailable Error?

The "RPC Server is Unavailable" error usually appears when a Windows computer can't communicate with other devices on the same network. RPC (Remote Procedure Call) is a protocol that allows a program on one computer to call a procedure or service on another computer over a network. It plays an important role in managing remote devices and sharing access to peripherals such as printers and scanners.

What is RPC Server is Unavailable error?

Causes of RPC Server Is Unavailable Error

The main causes of the "RPC Server is Unavailable" error:

• File and Printer Sharing is disabled: File and printer sharing is down and disabled, which can stop RPC operations.
• Network connection issues: Unstable or no signal network connection can cause the client to be unable to connect to the server.
• Incorrect Name Resolution: The RPC server may map to incorrect Name Resolutions, causing communication to fail.
• Firewall blocking connection: Firewalls on the server or client can block traffic to the server over TCP ports.
• Corrupt Registry: A corrupted Windows Registry or changes from the original settings can cause the RPC service to stop working.
• RPC services not running: The services "DCOM Server Process Launcher", "Remote Procedure Call (RPC)", and "RPC Endpoint Mapper" must be in running state and have automatic startup type.

How to Fix RPC Server Is Unavailable Error

Method 1: Restart RPC Server

The simplest way to fix this error is to restart the RPC Server. Here's how:

• Open the Services window by typing "services.msc" in the Run dialog box (Windows + R).
• Find Remote Procedure Call (RPC) in the list and double-click it.
• In the General tab, confirm that Startup type is set to Automatic. If Service status is not Running, click Start.

How to fix RPC Server is Unavailable error.

Method 2: Restart Your Computer in 'Clean Boot' Mode to Remove Third-party Applications

Clean Boot mode makes it easier to start Windows with a limited set of drivers and startup programs to determine if any third-party applications are causing the RPC Server is Unavailable error.

• Open System Configuration by typing "msconfig" in the search bar.
• In the Services tab, check Hide all Microsoft services, then click Disable all.
• Open Task Manager from the Startup tab, and disable each startup item.
• Restart your computer. You may want to re-enable each service and startup program one by one to determine the cause if the error disappears.

Method 3: Check Network Connection Settings

One of the important steps to fix the RPC Server is Unavailable error is to check your network settings. Make sure that File and Printer Sharing for Microsoft Networks and Internet Protocol Version 6 (TCP/IPv6) are enabled in your network adapter properties.

• Open Device Manager by pressing Windows + R, typing devmgmt.msc, and pressing Enter.
• Expand Network adapters, right-click your network adapter, and select Uninstall device.
• Restart your computer, Windows will automatically reinstall the driver.

Method 4: Change Firewall Settings

Firewall can be the main cause of RPC Server is Unavailable error. You need to check your firewall settings. This helps you fix this problem.

• Open Control Panel and open Windows Firewall.
• Select Allow an app through Windows Firewall.
• Search for Remote Assistance and make sure all check boxes are selected.
• Save changes and restart your computer.

Method 5: Edit in Registry

Backup your Registry before making any changes, as incorrect modifications may cause system instability.

• Open Registry Editor by typing "regedit" in the Run dialog box (Windows + R).
• Navigate to HKEY_LOCAL_MACHINESystemCurrentControlSetservicesRpcSs.
• Double-click the Start entry and set the value data to 2.
• Click OK and restart your computer.

Consider reinstalling Windows or using System Restore if you can't find the specified registry entries. Also, confirm that your Date, Time, and Time Zone settings are correct.

Conclude

Above is the information about the error RPC Server is Unavailable that this guide has compiled. Hopefully with the information and solutions provided in this article, you can better understand the error RPC Server is Unavailable and confidently fix it easily.

Final Thoughts

The most reliable way to handle RPC server is unavailable error is to follow the process in order, verify each important setting, and test the result before moving on. Use the guidance above as a practical reference, then adjust the details for your device, software version, or specific goal.