Slack_x64-Uninstall_AllUsers.ps1

# Uninstall Slack x64 - "Machine wide" MSI installer

$AppName = "Slack Machine-Wide"

# Sweep installed apps and pull the uninstall string.
# This is meant to solve the problem of uninstalling auto-patched apps. with automation.
# Secunia will auto-apply new MSIs, which changes the string.
# The config manager client can unisntall with this script, with no regard to the version that's actually installed.


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# Kill processes.

$ProcessName = "Slack"

Get-Process | ? {$_.name -eq $ProcessName} | % {$_ | Stop-Process -Force -Verbose}


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## Look for both architectures.

#$UninstallRoot = "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall"

$UninstallRoot = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"

# Find the first app which matches the name. Be careful to make it find the corret one, in case more than one app matches.

# ! ! ! no wildcards this time.

$AppInfo = Get-ChildItem -Path $UninstallRoot | Where-Object {$_.getValue("displayname") -eq ($AppName)} | Select-Object -First 1

$Version = $AppInfo.GetValue("DisplayVersion")

$LogFile = $env:TEMP + "\" + $AppName + "_" + $Version + "-Uninstall.log"

$AppGuid = $AppInfo.PSChildName


# With all this information, run the uninstall command.

& MsiExec /x $AppGuid /q /norestart /log $LogFile | Wait-Process