Deletes OAB locally and deactivates automatic OAB download for prompted user

oab.ps1

# This script remove the local Offline Address Book files and sets the 
# registry key to disable automatic download of the OAB

$OFS = "`r`n`r`n"
[System.Reflection.Assembly]::LoadWithPartialName('Microsoft.VisualBasic') | Out-Null
try {
    $username = [Microsoft.VisualBasic.Interaction]::InputBox("Input username", "User", "") 
    $User = New-Object System.Security.Principal.NTAccount($username)
    $sid = $User.Translate([System.Security.Principal.SecurityIdentifier]).value
} catch {
    [Microsoft.VisualBasic.Interaction]::MsgBox("An Error occured:$OFS$_",0,"Fehler!")| Out-Null
    exit
}
$office = [Microsoft.VisualBasic.Interaction]::InputBox("Please enter the Office version.${OFS}Office 2010 -- 14.0${OFS}Office 2013 -- 15.0${OFS}Office 2016 -- 16.0", "Office Version", "15.0")
New-PSDrive HKU Registry HKEY_USERS | Out-Null
New-ItemProperty "HKU:\${sid}\Software\Microsoft\Office\$office\Outlook" -Name "DownloadOAB" -Value 0 -PropertyType "DWord"
$MOABU = Get-ChildItem "HKU:\${sid}\Software\Microsoft\Exchange\Exchange Provider\OABs"
foreach ($oab in $MOABU) {
    $oabid = $oab.GetValue("MOABU")
    Remove-Item "c:\Users\$username\AppData\Local\Microsoft\Outlook\Offline Address Books\$oabid\*"
}