Uninstalling software using PowerShell on a remote machine?

Question

I am using this script to uninstall software (eg. Java). However, I have two Java packages, Java 8 Update and Java Auto Updater, on my machine.

I understand that when I run my script on such a machine that has two software that match my Regex (Java* in this case), it fails to make a $classkey that is unique to remote machine's WMI and so is the case it breaks.

function Uninstall-Application($computer, $target) {
    $productInfo = Get-WmiObject Win32_Product -Filter "Name LIKE '%$target%'" -ComputerName $computer
    $pin = $productInfo.IdentifyingNumber
    $pn = $productInfo.Name
    $pv = $productInfo.Version

    if ($pn -ne $null) {
        for ($i = 0; $i -lt $Productinfo.length; $i++) {
            $classKey = "IdentifyingNumber=`"$pin[$i]`",Name=`"$pn[$i]`",version=`"$pv[$i]`""
            $uninstallReturn = ([wmi]"\\$computer\root\cimv2:Win32_Product.$classKey").uninstall()
            if ($uninstallReturn.ReturnValue -ge 0) { Write-Host "Uninstall complete"}
            else { $uninstallReturn | Out-Host }
        } 
    }
    else {
        Throw "Product not found"
    }
}

uninstall-application "RemoteServer" "Java"

This code works, If there is just one software that matches my regex.

henrycarteruk · Accepted Answer · 2018-01-12 10:44:20Z

1

You can use a foreach loop to run the uninstall code against multiple items.

$products = Get-WmiObject Win32_Product -Filter "Name LIKE '%$target%'" -ComputerName $computer
foreach ($productInfo in $products) {
    #uninstall code
}

Full function:

function Uninstall-Application($computer, $target) {
    $products = Get-WmiObject Win32_Product -Filter "Name LIKE '%$target%'" -ComputerName $computer
    foreach ($productInfo in $products) {
        $pin = $productInfo.IdentifyingNumber
        $pn = $productInfo.Name
        $pv = $productInfo.Version

        if ($pn -ne $null) {
            for ($i = 0; $i -lt $Productinfo.length; $i++) {
                $classKey = "IdentifyingNumber=`"$pin[$i]`",Name=`"$pn[$i]`",version=`"$pv[$i]`""
                #$uninstallReturn = ([wmi]"\\$computer\root\cimv2:Win32_Product.$classKey").uninstall()
                #if($uninstallReturn.ReturnValue -ge 0) { Write-Host "Uninstall complete"}
                #else { $uninstallReturn | Out-Host }
            } 
        }
        else {
            Throw "Product not found"
        }
    }
}

Uninstall-Application "localhost" "Java"

answered Jan 12, 2018 at 10:44

henrycarteruk

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2 Comments

Senior Systems Engineer Over a year ago

OK, so uncomment the three lines to make the uninstall works?

henrycarteruk Over a year ago

Yep, there's no -WhatIf for that WMI command so I left it commented out.

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