'The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

Occasionally I get this error when working on remote computers. It's hit or miss on which computer I get it on. But I am able to ping the computer and test-connection pans out. For example, the computer I got this error on today I was able to get to yesterday. I know the computer is on because It's right next me. 

Get-WmiObject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
At line:1 char:14
+ get-wmiObject <<<<  -Class win32_operatingsystem -ComputerName $current -Authentication 6 -credential $credential | Invoke-WMIMethod -name Win32Shutdown
    + CategoryInfo          : InvalidOperation: (:) [Get-WmiObject], COMException
    + FullyQualifiedErrorId : GetWMICOMException,Microsoft.PowerShell.Commands.GetWmiObjectCommand
networkingpowershell


Solution 1:[1]

Check to see if the Remote Procedure Call (RPC) service is running. If it is, then it's a firewall issue between your workstation and the server. You can test it by temporary disabling the firewall and retrying the command.

Edit after comment:

Ok, it's a firewall issue. You'll have to either limit the ports WMI/RPC work on, or open a lot of ports in the McAfee firewall.

Here are a few sites that explain this:

  1. Microsoft KB for limiting ports
  2. McAfee site talking about the same thing

Solution 2:[2]

You may get your answer here: Get-WmiObject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

UPDATE

It might be due to various issues.I cant say which one is there in your case. It may be because:

  • DCOM is not enabled in host pc or target pc or on both
  • your firewall or even your antivirus is preventing the access
  • any WMI related service is disabled

Some WMI related services are:

  • Remote Access Auto Connection Manager
  • Remote Access Connection Manager
  • Remote Procedure Call (RPC)
  • Remote Procedure Call (RPC) Locator
  • Remote Registry

For DCOM settings refer to registry key HKLM\Software\Microsoft\OLE, value EnableDCOM. The value should be set to 'Y'.

Solution 3:[3]

My problem turned out to be blank spaces in the txt file that I was using to feed the WMI Powershell script.

Solution 4:[4]

I had the same problem when trying to run a PowerShell script that only looked at a remote server to read the size of a hard disk.

I turned off the Firewall (Domain networks, Private networks, and Guest or public network) on the remote server and the script worked.

I then turned the Firewall for Domain networks back on, and it worked.

I then turned the Firewall for Private network back on, and it also worked.

I then turned the Firewall for Guest or public networks, and it also worked.

Solution 5:[5]

Duting create cluster, my error was:

An error occurred while creating the cluster.
Could not determine Management Point Network Type.

The RPC server is unavailable

Solution:

Server Manager
Local Server
Click on one of the network adapter links, like "Ethernet".
Control Panel\Network and Internet\Network Connections
Right click on the first network adapter
Internet Protocol Version 4 (TCP/IPv4)
Properties
Advanced
DNS
Click radio button:
Append primary and connection specific DNS suffixes

Solution 6:[6]

If anyone else is reading this eons later. My problem was I deployed a GPO a few months ago that disables printer spooling via Windows Firewall rules. One of the rules is "File and printer sharing (Spooler Service - RPC-EPMAP)". This was set to deny.

This blocked the "RPC Endpoint Mapper" port range inbound and didn't specify a service. As a result this was blocking all traffic inbound on all RPC ports (tcp 1024-5000).

Disables the rule and this magically started working again.

TLDR; You need to allow the RPC Endpoint Mapper port range inbound on Windows firewall (tcp 1024-500) along with the WMI-In rule.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2 bluish
Solution 3 Vanhalo
Solution 4 Billy The Mexican
Solution 5
Solution 6 HalfNeck

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