The argument is null or empty: Start-Process error when invoking msiexec.exe for uninstallation

Question

Get-Process | ? {$_.ProcessName -eq "DellCommandUpdate"} | Stop-Process -Force

$Params = @(
    "/qn"
    "/norestart"
)

Start-Process "msiexec.exe" -ArgumentList $Params -Wait

I'm trying to uninstall Dell Command Update from a few laptops with older versions. I'm getting this error, below?

Answer 1

Msiexec.exe requires the path to the program you want to install or uninstall.
You also need the /x flag to specify that it is an uninstall, otherwise you're going to run it as an install. Try this:

$MSIExec = "msiexec.exe"
$Params = @(
    "/qn",
    "/norestart",
    "/x",
    "<Path to package.msi>"
)
& "$MSIExec" $Params

I'm inclined to consider this a duplicate question to the more generic "How do I run executable files with arguments in Powershell" question which has a similar answere here: https://stackoverflow.com/a/22247408/1618897

But, considering this is a new account, and you clearly showed what you've done, I think this is still valid.

EDIT: This answer runs asynchronously, see mklement0's answer for a 1:1 solution for a synchronous solution (which matches this question directly).