PowerShell remote event log parsing - powershell

Question

I wrote a small script to grab event log entries from a remote machine and write it to a .csv file. The script works when targeting a single machine, but when I try to implement a for loop and loop it over all machines in Active Directory, I get this error:
Method invocation failed because [Microsoft.ActiveDirectory.Management.ADComputer]
does not contain a method named 'op_Addition'.
At Y:\srp.ps1:7 char:143
+ ... | Export-Csv $($computer + ".csv")
+ ~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (op_Addition:String) [], RuntimeException
+ FullyQualifiedErrorId : MethodNotFound
Export-Csv : Cannot validate argument on parameter 'Path'. The argument is null or empty.
Provide an argument that is not null or empty, and then try the command again.
At Y:\srp.ps1:7 char:141
+ ... 0 | Export-Csv $($computer + ".csv")
+ ~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidData: (:) [Export-Csv],
ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationError,
Microsoft.PowerShell.Commands.ExportCsvCommand
The error indicates there's a problem with the Export-Csv command, but running the command by itself creates the log files needed. Here is the full script, for reference:
# Gets SRP event log entries from remote machine and writes them to a .csv file
# of the same name.
Write-Output "Running..."
$computers = Get-ADComputer -filter {(Name -like "PC*") -or (Name -like "LT*")}
foreach ($computer in $computers) {
Get-EventLog -LogName Application -Source Microsoft-Windows-SoftwareRestrictionPolicies
-ComputerName $computer -Newest 10 | Export-Csv $($computer + ".csv")
} #end foreach
Write-Host "Done."
Any ideas as to why this error appears when I try to loop over computers in AD?

Answer 1

It looks like Get-ADComputer returns ADComputer objects, but you're passing it to Get-EventLog's ComputerName parameter, which takes a string, as-is. I'm assuming you'll need to grab the name property from the Microsoft.ActiveDirectory.Management.ADComputer object.