To run a script using AZ copy to delete files older than X days on fileshare


I’m trying to run a script using AZ copy to delete files older than X days on fileshare, but the script is deleting everything, showing the message:

Unable to convert value “0001-01-01 00:00:00 +0000 UTC” to type “System.DateTime”. Error: "The string was not recognized as a valid DateTime. There is a
unknown word starting at index 26."
No C:\xxxxxxxxxxxxxxx:2
+ $dateTime = [DateTime]$listFiles[$i].Data.Replace('LastModifie …

the script I’m using:


$dateExecution = Get-Date
$limit = $dateExecution.AddDays(-30)

$application = “C:XXXXXXX\azcopy.exe”


$Logfile = “C:\XXXXXXXXXXXXXXXXXXXXXX_$dateRef.log”
$expurgoFile = “C:\XXXXXXXXXXXXXXX_”+$dateExecution.tostring(“yyyyMMdd”)+“.txt”
$listFile = “C:\aXXXXXXXXXXXXXXX_”+$dateExecution.tostring(“yyyyMMdd”)+“.csv”

Start-Transcript -Append $Logfile

Write-Host “Data/Hora Execucao:” $dateExecution.tostring(“yyyy-MM-dd HH:mm:ss”)
Write-Host “Deleting files older than $limit”

$commandline = “$application list “”$URLSTORAGE/$SAS”" --properties LastModifiedTime | Out-File -FilePath $listFile"
invoke-expression $commandline

$delimiter = “;”
$Header = “Arquivo”,“Data”,“Conteudo”
$listArquivos = Import-Csv $listFile -Delimiter $delimiter -Header $Header

for ($i = 0; $i -le $listArquivos.count-1; $i++) {
$fileName = $listArquivos[$i].Arquivo.Replace(‘INFO: ‘,’’)
$dataHora = [DateTime]$listArquivos[$i].Data.Replace(‘LastModifiedTime: ‘,’’).Replace(’ +0000 GMT’,‘’)
if ($dataHora -le $limit){
Write-Host $i “- File to be deleted:” $fileName “-” $dataHora.tostring(“MM/dd/yyyy HH:mm:ss”)
Add-Content -Path $expurgoFile -Value $fileName

if (Test-Path -Path $expurgoFile) {
$commandline = “remove “”$URLSTORAGE$SAS”" --recursive --log-level=INFO --list-of-files “”$expurgoFile"“”
Start-Process -FilePath $application -ArgumentList $commandline -NoNewWindow -Wait
Write-Host “files older than $limit successfully deleted”
} else {
Write-Host “No files older than $limit”


Hi, welcome to the forum :wave:

Firstly, when posting code in the forum, please can you use the preformatted text </> button. It really helps us with readability, and copying and pasting your code (we don’t have to faff about replacing curly quote marks to get things working).

How to format code on

It looks like your CSV file does not contain dates that can be converted to [datetime] objects. Because the conversion fails $dataHora has no value, so if ($dataHora -le $limit) always returns true and every file gets added to the list.