GetCert.ps1

$Computers = Get-ADComputer -filter * -SearchBase 'OU=Servers,OU=ComputersX,DC=contoso,DC=com' | Select-Object -ExpandProperty Name

$Allcerts = Invoke-Command -ComputerName $Computers -ScriptBlock {
    Get-childItem Cert:\LocalMachine\My | Select-Object DnsNameList,NotBefore,NotAfter,Thumbprint,Issuer,Subject
} -ErrorAction SilentlyContinue


#region get the cert we're looking for
$thumbprint = 'PLACEYOURTHUMBPRINTHERE'

$CurrentCert = $Allcerts | Where-Object {$_.Thumbprint -eq $thumbprint} | Select-Object PSComputerName
$CurrentCert | Export-Csv -Path C:\AdminTools\CurrentCert.csv -NoTypeInformation -Delimiter ';'

#endregion