How to fix an “RPC server is unavailable” error in Windows 10/11

how-to-fix-an-rpc-server-is-unavailable-error-in-windows-10-11

Are you grappling with the nagging “RPC Server is Unavailable” error message on your Windows PC? This common issue, linked to network functionality, can hinder access to files and devices.

In this informative article, we’ll walk you through a comprehensive guide of causes and practical solutions to rectify this error for uninterrupted computing. Dive in now, as a solution awaits just paragraphs away!

Key Takeaways

  • The “RPC Server is Unavailable” error is a common issue on Windows PCs that can hinder access to files and devices.
  • This error can be caused by network connectivity issuesfirewall blocking RPC ports, or disabled/misconfigured RPC service.
  • Troubleshooting steps include checking network connectivity, verifying RPC service status, allowing RPC ports through the firewall, resetting RPC settings to default, and updating Windows and drivers.

Understanding the RPC Server and Its Role in Computer Networking

In the realm of computer networking, the Remote Procedure Call (RPC) Server plays an integral role. Essentially acting as a ‘middleman’, it facilitates communication between different software programs located on independent devices across a network.

The RPC server is key to sharing data and managing devices conveniently over this setup.

The functionality provided by this server extends to various Windows operations, including network sharing and device management tasks. It’s due to its significance that when users encounter the “RPC Server is Unavailable” error message in their Windows 10 systems, they might have restricted access to certain files or functionalities – making it detrimental to efficiency in system operations.

Precise configuration is vital for the smooth performance of RPC servers. For instance, the DCOM Server Process Launcher service should always be set to start automatically with its status running optimally at all times.

This can be verified within your system’s control panel under administrative tools and services settings which guide you toward the optimal operation of your RPC Server.

But even with these checks done right, issues such as failed connectivity or unwarranted blocking from firewalls may disrupt seamless functioning leading to “RPC Server is Unavailable” errors.

These are situations we’ll explore further in upcoming sections along with comprehensive troubleshooting steps tailored just for you.

Causes of the “RPC Server is Unavailable” Error

Network Connectivity Issues

Network connectivity issues often trigger the infamous “RPC Server is Unavailable” error. Many times, these may be due to a weak network signalincorrect settings, or even hardware troubles with your router.

Network configuration errors can lead to unsuccessful communication between the client and server machines involved in RPC transactions, hence causing the error message.

As an early step in troubleshooting network connectivity issues linked with this error, verify that both machines are fully connected and operational within the network. Restarting your computer as well as resetting routers or modems can often resolve common connection glitches in one go.

Reinstalling network drivers also aids in eliminating outdated or broken ones which may be hindering seamless transmission of data across your system’s various parts. Keep an eye on intricate details like the enabled File and Printer Sharing for Microsoft Networks option within the properties menu of your relevant network connection while resolving such issues.

Firewall Blocking RPC Ports

The firewall serves as a barrier between your computer and the outside world, ensuring you’re protected from potential threats. However, in certain cases such as dealing with RPC server traffic, this safeguard may inadvertently cause these errors.

If communication to and from these ports is obstructed, it can render the RPC server unreachable or unavailable. It’s crucial to reconfigure the settings of your Windows Firewall to permit the required access for RPC Services through specific network ports.

Guided adjustments involve navigating through control panel options and verifying appropriate boxes under Remote Assistance are checked off – following this step could significantly leverage firewall configurations towards resolving common causes of RPC server errors.

Disabled or Misconfigured RPC Service

The RPC service plays a crucial role in computer networking, allowing different processes to communicate with each other over a network.

When the RPC service is disabled or configured incorrectly, it can lead to this error message.

To fix this error, you need to ensure that the RPC service is enabled and properly configured. One way to do this is by restarting the RPC Server service on your computer. You can access the Services menu through Control Panel’s Administrative Tools and find the DCOM Server Process Launcher.

Make sure its startup type is set to Automatic and that the service status is running.

Here’s how you fix the RPC Server is Unavailable error on Windows 10 11.

1. Checking Network Connectivity to fix the error message in Windows 10 /11

  1. Ensure that your Ethernet or Wi-Fi connection is working properly.
  2. Check if other devices on your network can connect to the internet.
  3. Verify that your router or modem is functioning correctly by restarting it.
  4. Use the Windows Network Troubleshooter to diagnose and resolve any network issues.
  5. Make sure that all cables connected to your computer are securely plugged in.
  6. Confirm that your IP address and DNS settings are configured correctly.

2. Verifying RPC Service Status

  1. Open the Control Panel on your Windows computer.
  2. Go to Administrative Tools and select Services.
  3. Look for “DCOM Server Process Launcher” in the list of services.
  4. Ensure that the Startup type is set to Automatic and the Service status is Running.

3. Allowing RPC Ports through the Firewall

  1. Open the Control Panel on your Windows computer.
  2. Search for “firewall” in the search bar within the Control Panel.
  3. Click on “Allow an app through Windows Firewall” or a similar option related to firewall settings.
  4. In the dialog box that appears, look for “Remote Assistance” or any other options related to RPC server communication.
  5. Check all the boxes next to these options to allow them through the firewall.
  6. Save your changes and close all windows.
  7. Restart your computer to apply the new firewall settings.

4. Resetting RPC Settings to Default to solve RPC server unavailable error on Windows

  1. Press the Windows Key + R on your keyboard to open the Run command.
  2. Type “services.msc” in the Run dialog box and press Enter.
  3. In the Services window, locate the “Remote Procedure Call (RPC)” service.
  4. Right-click on it and select Properties from the context menu.
  5. In the Properties window, go to the General tab.
  6. Click on the “Stop” button to stop the RPC service.
  7. Under Startup type, select “Automatic” from the drop-down menu.
  8. Click on the “Start” button to restart the RPC service.
  9. Click Apply and then OK to save the changes.

5. Restarting the PC to fix the RPC Server Error

  1. Save any open files or documents and close all running programs.
  2. Click on the Start menu button, located at the bottom left corner of your screen.
  3. From the Start menu, click on the Power icon.
  4. Select Restart from the drop-down menu.
  5. Wait for your computer to shut down and restart.

6. Updating Windows and Drivers

  1. Check for Windows updates regularly: Go to the Settings menu and click on “Update & Security.” From there, click on “Windows Update” and select “Check for updates.” Install any available updates.
  2. Update drivers manually: Visit the manufacturer’s website for each device connected to your computer (e.g., graphics card, network adapter). Locate their latest driver versions compatible with your operating system. Download and install them following the provided instructions.
  3. Use Device Manager: Open the Start menu, search for “Device Manager,” and open it. Expand the categories and locate any devices with a yellow exclamation mark icon indicating outdated or faulty drivers. Right-click on the device, select “Update driver,” and choose whether you want Windows to search automatically or if you have downloaded a specific driver file.
  4. Use third-party driver update software cautiously: While there are tools available that claim to automate driver updates, exercise caution in using them as they may install incompatible or outdated drivers.
  5. Reboot after updates: After installing Windows updates or updating drivers, it’s essential to restart your computer so that changes can take effect fully.

7. Running System Scans for Malware

  1. Use a trusted antivirus or anti-malware software to perform a full system scan. This will help identify and eliminate any potential threats that may be causing the RPC Server error.
  2. Make sure your antivirus software is up-to-date with the latest virus definitions. Regular updates ensure that your system is well protected against new and emerging threats.
  3. During the scan, allow the antivirus software to remove or quarantine any detected malware. This will help prevent further interference with RPC and other vital services.
  4. After completing the scan and removing any malware, restart your computer to finalize the cleanup process.
  5. Consider running additional malware removal tools, such as Malwarebytes or Windows Defender Offline, for an extra layer of protection.

8. Checking for Software Updates

  1. Open the Start menu and click on Settings.
  2. In the Settings window, select Update & Security.
  3. Click on Windows Update in the left-hand pane.
  4. Under Windows Update, click on Check for updates.
  5. If there are any available updates, Windows will begin downloading and installing them.
  6. Once the updates are installed, restart your computer.

9. Ensuring Reliable Firewall Configuration

  1. Open the Control Panel and search for “Firewall” in the search bar.
  2. Click on “Allow an app through Windows Firewall” under the Windows Firewall option.
  3. In the dialog box, locate and check all the boxes associated with Remote Assistance.
  4. Save changes and restart your computer.

10. Restart the RPC Server

  1. Open the Control Panel on your Windows computer.
  2. Go to Administrative Tools.
  3. Select Services.
  4. Look for “DCOM Server Process Launcher” in the list of services.
  5. Ensure that the Startup type is set to Automatic and the Service status is Running.
  6. If the service is not running, right-click on it and select Start.
  7. Once the service is running, close the Services window.

11. Clean Boot the Computer to Rule Out Third-Party Applications

  1. Open System Configuration by searching for “sysconfig” in the Start menu.
  2. Go to the Services tab and check the “Hide all Microsoft services” button.
  3. Check all the services from the list and click Disable All.
  4. Open Task Manager and go to the Startup tab.
  5. Click on each service one by one and click Disable.
  6. Restart your computer.

12. Check Your Network Connection Settings

  1. Press the Windows Key + R to open the Run command.
  2. Type “ncpa.cpl” in the Run dialog box and press Enter.
  3. Right-click on the relevant network connection and select Properties.
  4. In the Properties menu, make sure to enable File and Printer Sharing for Microsoft Networks.
  5. Also, ensure that Internet Protocol Version 6 (TCP/IPv6) is enabled.
  6. Save the changes and restart your computer.

13. Change Your Firewall Settings

  1. Open the Control Panel on your Windows computer.
  2. Type “firewall” in the search bar and click on “Allow an app through Windows Firewall” under the Windows Firewall option.
  3. In the dialog box that appears, look for “Remote Assistance” and check all the boxes next to it.
  4. Save the changes and restart your computer.

14. Change Registry Settings

  1. Create a restore point and back up your registry before making any changes.
  2. Press the Windows Key + R to open the Run dialog box.
  3. Type “regedit” and press Enter to open the Registry Editor.
  4. In the Registry Editor, navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\services\RpcSs.
  5. Double-click on the START entry and set the Value data to 2.
  6. Navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\services\DcomLaunch.
  7. Double-click on the START value and change the Value data to 2.
  8. Navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\services\RpcEptMapper.
  9. In the START value, set the Value data to 2.

15. Use System Restore to Restore Your Computer

  1. Open the Control Panel on your computer.
  2. Click on “Recovery” or “System and Security.”
  3. Select “System Restore” or “System Protection” from the options available.
  4. In the System Restore window, click on “Next.”
  5. Choose a restore point from the list provided. It’s recommended to choose a restore point that predates the appearance of the RPC Server error.
  6. Follow the prompts and confirm your selection, then click on “Finish.”
  7. Your computer will then restart and begin the restoration process.

16. Flush and renew your DNS

  1. Press the Windows Key + R to open the Run command.
  2. Type “cmd” and press Enter to open the Command Prompt.
  3. In the Command Prompt window, type “ipconfig /flushdns” and press Enter.
  4. Wait for the command to complete its execution.
  5. Next, type “ipconfig /renew” and press Enter to renew your DNS settings.
  6. Once the process is complete, close the Command Prompt.

17. Enable File and Printer Sharing for Microsoft Networks

  1. Press the Windows Key + R on your keyboard to open the Run dialog box.
  2. Type “ncpa.cpl” in the Run dialog box and press Enter.
  3. Right-click on the relevant network connection and select Properties.
  4. In the Properties menu, locate and enable the “File and Printer Sharing for Microsoft Networks” option.
  5. Additionally, ensure that the “Internet Protocol Version 6 (TCP/IPv6)” option is also enabled.

18. Force RPC services to start

  1. Open the Run dialog box by pressing the Windows Key + R.
  2. Type “services.msc” and press Enter to open the Services window.
  3. Scroll down and locate the “Remote Procedure Call (RPC)” service.
  4. Right-click on it and select Properties from the context menu.
  5. In the Properties window, go to the General tab.
  6. Ensure that the Startup type is set to Automatic.
  7. If the Service status is not Running, click on Start to force it to start.
  8. Click Apply and then OK to save the changes.

19. Verify the correct time and time zone

  1. Open the Control Panel on your computer.
  2. Look for the “Date and Time” or “Clock and Region” option and click on it.
  3. In the Date and Time settings, make sure that the current date and time displayed are correct.
  4. If needed, click on the “Change date and time” button to adjust them manually.
  5. Next, navigate to the “Time Zone” tab.
  6. Check if the displayed time zone matches your actual location.
  7. If not, select the correct time zone from the drop-down menu.
  8. Finally, click on “Apply” or “OK” to save the changes.

20. Verify that “TCP/IP NetBIOS Helper” is running and set to automatically start a restart

  1. Open the Control Panel on your computer.
  2. Navigate to Administrative Tools.
  3. Select Services from the options.
  4. Look for the “DCOM Server Process Launcher” service in the list.
  5. Ensure that the Startup type for this service is set to Automatic.
  6. Check that the Service status of “DCOM Server Process Launcher” is Running.

21. Verify that “Remote Registry” is running and set to automatically start a restart

  1. Press the Windows key + R to open the Run command.
  2. Type “services.msc” and press Enter.
  3. In the Services window, locate the “Remote Registry” service from the list.
  4. Right-click on “Remote Registry” and select Properties.
  5. In the Properties window, under the General tab, check if the Startup type is set to Automatic.
  6. If it’s not, select Automatic from the dropdown menu and click Apply.
  7. Next, click on Start to initiate the service if it’s not already running.
  8. Click OK to save your changes.

22. Uninstall Old/Outdated drivers

  1. Open the Start menu and type “Device Manager” in the search bar.
  2. Click on the Device Manager app that appears in the search results.
  3. In the Device Manager window, expand the categories to locate the device drivers that might be causing conflicts with RPC.
  4. Right – click on a particular driver and select “UninstallRight-click the context menu.
  5. Follow the prompts to complete the driver uninstallation process.
  6. Repeat steps 4 and 5 for any other outdated or problematic drivers.
  7. Once all relevant drivers have been uninstalled, restart your computer.
  8. Upon reboot, Windows will automatically reinstall default drivers for your devices.

Conclusion

In conclusion, the “RPC Server is Unavailable” error is a common issue that Windows users face. It can be frustrating as it restricts access to files and devices on a network. However, by following the troubleshooting steps outlined in this blog, such as restarting the RPC service, checking network settings, and updating drivers, you can easily resolve this error and regain the full functionality of your system.

Don’t let this error hold you back – tackle it head-on with these solutions. If you can solve it, get in touch with an expert in PC repairs.

Author:
I am a computer engineer holding a bachelor's degree in Computer Science, complemented by a Master's in Business Administration from University of Strathclyde, Scotland. I currently work as a Senior IT Consultant in Melbourne, Australia. With over 15 years of...