The RPC server is unavailable Exception from HRESULT 0x800706BA

Question

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  lt  lt  lt  lt   -Class win32 operatingsystem -ComputerName  current -Authentication 6 -credential  credential   Invoke-WMIMethod -name Win32Shutdown       CategoryInfo            InvalidOperation       Get-WmiObject   COMException       FullyQualifiedErrorId   GetWMICOMException Microsoft PowerShell Commands GetWmiObjectCommand

User · Accepted Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

[networking] The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

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