Powershell folder size of folders without listing Subdirectories

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You need to get the total contents size of each directory recursively to output. Also, you need to specify that the contents you’re grabbing to measure are not directories, or you risk errors (as directories do not have a Length parameter).

Here’s your script modified for the output you’re looking for:

$colItems = Get-ChildItem $startFolder | Where-Object {$_.PSIsContainer -eq $true} | Sort-Object
foreach ($i in $colItems)
{
    $subFolderItems = Get-ChildItem $i.FullName -recurse -force | Where-Object {$_.PSIsContainer -eq $false} | Measure-Object -property Length -sum | Select-Object Sum
    $i.FullName + " -- " + "{0:N2}" -f ($subFolderItems.sum / 1MB) + " MB"
}

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