NET USE only works once in powershell

My requirement is to connect to a remote computer, copy files with the extension of `.TRA` to a different remote computer. Now my difficulty arises in that the source machine aren't on the domain so I need to connect with alternate credentials. My first sticking point is trying to use `New-PSDrive`. It doesn't appear to allow me to pass stored credentials. I have tried various versions of this: ``` $cred = Get-Credential New-PSDrive -NAME Z: -PSprovider Filesystem -root \\Computer\Exchange -credentials $cred ``` and I get an error The provider does not support the use of credentials. Perform the operation again without specifying credentials. This appears to be a bug (see halr9000's comment here : Connecting to a network folder with username/password in Powershell) My alternative was to use `NET USE`, which works fine but only once. In the full script below I map to 8 different machines. The first of these works. After that any attempt to use `NET USE` (or `New-Object WScript.NETWORK`, mentioned as a work around on the Technet article linked above) fails. Or rather it doesn't fail. Its creates a mapped drive, which I can see if I type `NET USE`, or if I look in explorer (and its browsable). But I cannot connect to that drive in Powershell. Its like it doesn't exist, `Test-Path Z:` returns False. Right up until I run `NET USE Z: /D` which successfully deletes the drive. Can someone please help me with one or other of my issues please? Don't make me do this in DOS! Full script : ``` $int = 0 $arrStagePC = "BOX42", "BOX43", "BOX44", "BOX45", "BOX46", "BOX47", "BOX48", "BOX49" $arrData = "0848","5144","5292","5383","2158","2646","0061","2331" Foreach($strComp in $arrStagePC) { $arr = $arrData[$int] $comp = $strComp net use z: \\$arr\Exchange /user:admin password Copy-Item z:\*$date.tra \\$comp\Export$ net use z: /d $int++ } ``` EDIT Have a look at @Christians accepted answer below. I didn't actually need to Get-Content that folder, I just needed to copy data from the source so the bit of the script doing the business on there now looks like : ``` Foreach($strComp in $arrStagePC) { $arr = $arrData[$int] $comp = $strComp net use z: \\$arr\Exchange /user:admin password Copy-Item FILESYSTEM::Z:\*.TRA \\$comp\Export$ net use z: /d $int++ } ```