Check/Test WinRM On All Domain-Joined Servers

Get-WinRMServerFailures.ps1

function Get-WinRMServerFailures
{
    # Ping a Server and if it responds test WINRM
    
    $Log = 'C:\SCRIPTS\WinRM\Servers_WinRMFailed.log'
    Remove-Item $Log

    $Servers = (Get-ADComputer -Filter * -Properties Name,OperatingSystem,Enabled | Where {($_.Enabled -eq $true) `
    -and ($_.OperatingSystem -like "Windows Server*")} | Sort Name).Name
    
    foreach ($Server in $Servers)
    {
        # $Server = 'SERVER1' # Testing

        # Ping the Server and if it responds
        if(Test-Connection -ComputerName $Server -Count 1 -Quiet){
            
            # Test WinRM
            $TestWinRM = Test-NetConnection -ComputerName $Server -CommonTCPPort WINRM #-ErrorAction Stop
        
            if($TestWinRM.TCPTestSucceeded -eq $false){
                Add-Content -Path $Log -Value $Server
            }
            
        }#END IF BIG
        
    }#END FOREACH
}