Setting folder ownership onbulk can be made easy with Powershell.
The script from below is from snippets found on the internet and modified for our use. It comes with no warranty.
$pathlink = "\\serverpath\folder\"
$folders = get-childitem $pathlink
foreach($user in $folders){
Write-Host "User folder:" $user
write-verbose "Folder: $($user.fullname)" -verbose
write-verbose "User: $("$env:USERDOMAIN\$(split-path $user.name -leaf)")" -verbose
ICACLS ("$($user.fullname)") /setowner ("$env:USERDOMAIN\$(split-path $user.name -leaf)")
$userfolder = Get-ChildItem -Recurse $pathlink\$user
$username = $user.fullname
$counter ++
foreach($subfolder in $userfolder){
Write-Host "Subfolder:" $subfolder
ICACLS ("$($subfolder.fullname)") /setowner ("$env:USERDOMAIN\$(split-path $user.name -leaf)")
}
Write-Host -ForegroundColor Magenta "ITEM:" $counter "/" ($folders).count
}