6 Fixes For “The RPC Server Is Unavailable” Error

Users sometimes run into the “RPC server is unavailable” error in Windows OS. RPC problems occur when two or more machines communicate over a network.

It is one of the more typical problems that can arise when using the Windows operating system. It leaves inexperienced Windows users confused on why it appeared in the first place.

rpc server is unavailable

The majority of RPC server problems occur on a single computer. However, the fault could be caused by something on that computer or something in the network as a whole. In this essay, I’ll teach you how to solve both types of challenges.

What is RPC Server Error?

The error code 0x800706BA is also known as the RPC server error. It’s just a simple communication problem. Issues with data transfer cause it. It is between two machines on the same network or two processes on the same computer.

Data must be transmitted between a client and a server for some Windows processes. A Remote Procedure Call is how Windows processes and components communicate with RPC. When a computer is turned on, the RPC server typically starts up immediately.

To use a service or process, the client must first inquire about its location from the server. The requested process cannot be executed if the RPC server does not respond to the client. The error notice “RPC server is unavailable” appears as a result of this.

Problems with the network are the most typical cause. A firewall is a device that blocks data traffic. Some programs will stop working, and you will be unable to install or configure devices or software.

What Are The Causes Of RPC Service Error

Sharing Of Files And Printers Is Disabled.

It most commonly causes RPC errors. A request or procedure call is sent to a peripheral device, such as a printer. The RPC capability of the peripheral must be activated, and it must be linked to the network. RPC will stop working if anything goes wrong here.

Issues With Network Connectivity

The operation of a remote procedure call is dependent on the network. A faulty network connection could cause server unavailability. When a client fails to send a procedural call to the server, the error “RPC server unavailable” appears.

Issues With Resolving Names

The server’s name, IP address, and port address are used to send client requests. The name of an RPC server is mapped to the incorrect IP address. It causes the client to contact the wrong server, which may result in an RPC error.

Windows Firewalls

On a server, a third-party firewall, or any other security application. It may occasionally prevent traffic from reaching the server via its TCP ports. RPCs are disrupted as a result of this.

Corruption Of The Registry

To function, RPC requires a valid Windows registry. Any of these entries have been erroneously updated or have gotten corrupted. The RPC service will most likely cease to exist.

How To Make The RPC Server Keep Running

Check your firewall settings. See whether RPC data traffic is being blocked to avoid the problem from happening again. Check the correct settings if you’re using a third-party firewall.

  • Go to the Control Panel and write “Windows Firewall” in the search box.
  • All of the boxes under “Remote Assistance” in the “Remote” tab should be checked.
  • Ensure your machine is connected to the web.
  • Right-click on the network connection you’re using. Pick “Properties” from the “Network and Internet” menu.
  • Check the option “File and Printer Sharing for Microsoft Networks.” Also, “Internet Protocol Version 6 (TCP/IPv6).”
  • Click on the Checkbox in front of both options.

Methods To Solve RPC Server Is Unavailable Error

  1. Ensure RPC Services Are Running
  2. Check Registry Entries
  3. Check Your Network Connection
  4. Flush DNS Server
  5. Check The Firewall On Computer
  6. Switch To ChromeOS

1. Ensure RPC Services Are Running

The issue “The RPC server is unavailable” can be generated by the RPC service on all linked machines not working correctly. Ensure that all RPC-related services are operational, perform the procedures below.

  • Open the Control Panel. Go to the Start (Windows symbol).
  • Select “Administrative Tools” and then “Services” from the drop-down menu. You may also search for “Services” in the search bar.
  • Double-click “DCOM Server Process Launcher” in the list to open it.
  • Now search for RPC in the services window.
search for RPC in services
  • You’ve arrived at the RPC server’s configuration menu. The “Startup type” should ideally be “Automatic,” with the “Service Status” set to “Running.”
startup type automatic
  • Set the “Startup type” to the “Automatic” and select the “Start” button under “Service status” if this is not the case. To confirm, click “OK.”
start RPC server
  • Close any programs that are now open and restart your computer.

2. Check Registry Entries

To ensure that RPC is working correctly on your machine, check your Registry settings. To examine the registry, log in as an administrator to your operating system.

  • To launch the Run dialogue, press the Windows logo key and R on your keyboard. Then click Enter after typing “regedit.”
  • Navigate to HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/services/RpcSs in your Registry Editor.
  • Look to see if any items don’t exist. If there is, I recommend that you reinstall Windows.
  • The Remote Procedure Call (RPC) was not set correctly. In the “RpcSs” route, you can update the Start registry key.
  • To change the value of Start, double-click it. Set the data value to 2.
change start value to 2 in Edit DWORD
  • Go to HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/services/DcomLaunch.
  • Check for any missing items. The DCOM Server Process Launcher was not correctly configured.
  • To change the value of the Start registry key, double-click it. Set the data value to 2.
change start value to 2
  • Go to HKEY_LOCAL_MACHINE/SYSTEM/Current/ControlSetservices/RpcEptMapper in. 
  • Check to see if anything is missing. If you already discovered that the RPC Endpoint Mapper configuration was incorrect.
  • To change the value of the Start registry key, double-click it. Set the value data to 2 once more.
change start value to 2

3. Check Your Network Connection

RPC Service is based on a client/server concept. It requires the use of a network to function. The connection between a client and its server is broken. RPC Server Unavailable error occurs.

Ensure that all of your systems are correctly connected to a network. You can also use the “ping” command to see if the RPC client and server are connected.

It’s also a great idea to double-check all drivers are correctly installed. They’re crucial for an RPC’s inter-networking. Although network drivers seldom generate RPC issues. 

Follow these steps to do so:

  • Hover over the start menu when logged in with administrator permissions.
  • At the exact moment, press the Windows key and the R key on the keyboard. In the Run window, type “ncpa.cpl” into the box and hit OK.
  • Right-click on the local area connection and select Properties. Control Panel network connections
internet properties
  • Enable both options “Internet Protocols” and also “File and Printer Sharing for Microsoft Networks.” If any of these factors are absent from the properties of the local area connection, you must restore them.
Internet Protocols" and also "File and Printer Sharing for Microsoft Networks

4. Flush DNS Server

Perform a DNS flush if your services are up and running, but you’re still getting this error message. After this, check if the RPC server is unavailable the problem is fixed.

  • Open the Start menu, type “cmd prompt” into the search box, and select Command Prompt.
admin command prompt
  • Windows PowerShell is another option. You need to pick the Run as administrator choice.
  • Now, without the quotations, write “ipconfig /flushdns” and press Enter.
ipconfig /flushdns
  • Your DNS server’s files have now been flushed, which should have resolved your problem.

5. Check The Firewall On Computer

RPC requests can be blocked by firewalls or other security-related apps operating on the system. Allow incoming and outgoing RPC connections by configuring them. You should also include any additional programs that you plan to use in RPCs.

Turn off the feature for a few moments till your RPC is successful. You can check to see if your firewalls are the source of RPC failures. Make an exception for Remote Procedure Calls in the default Windows firewall. For RPC to work, you’ll also need a remote desktop.

  • To launch the Run dialogue, press the Windows logo key and R on your keyboard.
  • Then press Enter after typing “control.”
control in run window
  • Look for Windows Firewall in the Control Panel. Then, beneath Windows Firewall, select Allow an app through Windows Firewall.
windows Defender firewall
  • To find Remote Assistance, scroll down or search in the bar.
Remote Assistance
  • Determine that it is capable of communicating. Just click on “Allow remote assistance connections” (All the boxes of this item are ticked).
Allow remote assistance connections

6. Switch To ChromeOS

Windows 10 is a newer version of Windows. However, the operating system as a whole is outdated. Windows is still the most recent version of an operating system that has been around for decades.

We have the internet, high-speed connections, unlimited cloud storage. Also, a plethora of web apps. The Windows operating system, including installed apps and local file storage, is obsolete.

You’re constantly installing third-party programs that you don’t have any control over. You’re continually allowing viruses and other malware into your system. You can get registry corruption if your computer shuts down. Also, if an application installs, uninstalls, or updates erroneously.

Everything is installed and saved locally in Windows. It’s only a matter of a moment before you reach out of disk space. The disk becomes fragmented, making everything even slower and more unstable.

ChromeOS Is A Google Operating System.

ChromeOS Is A Google Operating System.

ChromeOS has a Windows-like feel to it. You use web apps instead of installing a slew of programs. There is no need to install anything. You don’t have any virus or malware issues, and your computer doesn’t slow down or grow unstable over time.


So those are multiple options for resolving the problem. People who were experiencing the “RPC Server is Unavailable” problem confirmed these solutions. Hopefully, one of the ways listed above can help you address your issue.