Backupeventlog not working for remote system in PowerShell

Question

I have the following code snippet that works if I specify localhost or the name of the local computer, but does not work if set to a remote server. I am running the script as Administrator using my Domain Admin account. Both local and remote systems
are Windows Server 2012 and in the same domain. PowerShell version = 3.0.
Param(
[parameter(Mandatory=$true,ValueFromPipeline=$true)]
[ValidateScript({Test-Connection $_ })]
[String]
$Server,
[parameter(Mandatory=$true,ValueFromPipeline=$true)]
[String]
$LogFileName,
[parameter(Mandatory=$true,ValueFromPipeline=$true)]
[ValidateScript({Test-Path $_ -PathType 'Container'})]
[String]
$OutputFolder
$EventLog = Get-WmiObject win32_nteventlogfile -ComputerName $Server -Filter "LogFileName = '$LogFileName'" -ErrorAction SilentlyContinue -ErrorVariable $ResultError
If ($ResultError)
Write-Host "ERROR: unable to event logs from $Server."
} Else {
Write-Host "Backing $Server."
$EventLog.backupeventlog("$OutputFolder\$Server.evtx")

Answer 1

After spending some more time troubleshooting this and doing some more research I found the link below. I found it strange the hoops the author went through to handle event logs on remote systems until I realized that the path for "backupeventlog"
is relative to the remote system, not the system running the script. So I checked the other systems and found that the event log backups had been created. This would explain the returnvalue of 80. What's worse is that the path for "backupeventlog"
can't be a UNC -- I tried, it didn't work.
Back Up Your Event Logs with a Windows PowerShell Script
https://technet.microsoft.com/en-ca/magazine/2009.07.heyscriptingguy.aspx
I decided to re-read Microsoft's documentation and found the magical text that I had over-looked:
BackupEventlog method of the Win32_NTEventlogFile class
https://msdn.microsoft.com/en-us/library/aa384808(v=vs.85).aspx
In addition, you must make backups to the local computer; you cannot save a backup of the event logs on Computer A to Computer B. Backups are implemented by using the LocalSystem account, which does not have the network credentials necessary to access remote
computers. If you want to save backups to a central repository, modify the script to first perform the backup, and then move the backup file to the central repository.
jrv:
I would mark your post of Wednesday, March 04, 2015 9:45 PM as helpful if this option were available. Your comment got me to dig into this deeper and discover
the root cause.
Thanks.