OfficeUpdateRemover.ps1

#############################################################
#
# Office Update Remover
#
# By Adam Laycock (arcath.net)
# September 2017
# 
#############################################################
Param(
    [Parameter(Mandatory=$True,Position=1)][string]$kb
)

$officePID = $False
$updatePID = $False

Get-ChildItem HKLM:\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall -rec -ea SilentlyContinue | foreach {
    $currentKey = Get-ItemProperty -Path $_.PsPath
    if($currentKey.DisplayName -like "*" + $kb + "*"){
        $parts = $currentKey.PSChildName.Split("_")
        $officePID = $parts[0]
        $updatePID = $parts[2]
    }
}

# If the patch was not in 64bit registry look in 32 bit
if($officePID -eq $False -and $updatePID -eq $False){
    Get-ChildItem HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall -rec -ea SilentlyContinue | foreach {
        $currentKey = Get-ItemProperty -Path $_.PsPath
        if($currentKey.DisplayName -like "*" + $kb + "*"){
            $parts = $currentKey.PSChildName.Split("_")
            $officePID = $parts[0]
            $updatePID = $parts[2]
        }
    }
}

if($officePID -ne $False -and $updatePID -ne $False){
    $args = @(
        "/package"
        $officePID
        "/uninstall"
        $updatePID
        "/qn"
        "/quiet"
        "/norestart"
    )

    Write-Host "msiexec" $args

    Start-Process "msiexec.exe" -ArgumentList $args -Wait -NoNewWindow
}