#$computerList = "Server Name"
#$regVar = "Name of the package "
#$packageName = "Packe name "
$computerList = $args[0]
$regVar = $args[1]
$packageName = $args[2]
foreach ($computer in $computerList)
{
Write-Host "Connecting to $computer…."
Invoke-Command -ComputerName $computer -Authentication Kerberos -ScriptBlock {
param(
$computer,
$regVar,
$packageName
)

Write-Host "Connected to $computer"
if ([IntPtr]::Size -eq 4)
{
$registryLocation = Get-ChildItem "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\"
Write-Host "Connected to 32bit Architecture"
}
else
{
$registryLocation = Get-ChildItem "HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\"
Write-Host "Connected to 64bit Architecture"
}
Write-Host "Finding previous version of `enter code here`$regVar…."
foreach ($registryItem in $registryLocation)
{
if((Get-itemproperty $registryItem.PSPath).DisplayName -match $regVar)
{
Write-Host "Found $regVar" (Get-itemproperty $registryItem.PSPath).DisplayName
$UninstallString = (Get-itemproperty $registryItem.PSPath).UninstallString
$match = [RegEx]::Match($uninstallString, "{.*?}")
$args = "/x $($match.Value) /qb"
Write-Host "Uninstalling $regVar…."
[diagnostics.process]::start("msiexec", $args).WaitForExit()
Write-Host "Uninstalled $regVar"
}
}

$path = "\\$computer\Msi\$packageName"
Write-Host "Installaing $path…."
$args = " /i $path /qb"
[diagnostics.process]::start("msiexec", $args).WaitForExit()
Write-Host "Installed $path"
} -ArgumentList $computer, $regVar, $packageName
Write-Host "Deployment Complete"

}