read-host -assecurestring | convertfrom-securestring | out-file

 I have tried this command on 3 different PC (2008r2 and win7)

read-host -assecurestring | convertfrom-securestring | out-file C:\posh\cred.txt

I used the same user account to create cred.txt and run this command.

In cred.txt just  simple text like  “jhdfjdhjfdhfjdhjfdf”

An error I got:

PS C:\posh> read-host -assecurestring | convertfrom-securestring | out-file C:\posh\cred.txt

ConvertFrom-SecureString : Cannot process argument because the value of argument "SecureString" is invalid. Change the value of the "SecureString" argument and run the operation again.

At line:1 char:53

+ read-host -assecurestring | convertfrom-securestring <<<<  | out-file C:\posh\cred.txt

    + CategoryInfo          : InvalidArgument: (:) [ConvertFrom-SecureString],

    PSArgumentException

    + FullyQualifiedErrorId : Argument,Microsoft.PowerShell.Commands.ConvertFr

   omSecureStringCommand

Is there something I’m doing improper way?