Get-Credential popupbox still saves credentials even when fields are empty or when your press the Cancel-button.

Dear Experts,

Get-Credential popupbox still saves credentials even when fields are empty or when your press the Cancel-button. How can i solve this in PowerShell? I have wrote that de credentials will be written to file

$credentials = Get-Credential  #popup box$filename = 'L:\secretfile.txt'$credentials | Export-CliXml -Path $filename

gr.P