Zoom_x86-Uninstall_AllUsers.ps1

# Universal MSI uninstaller for Zoom "All Users" SYSTEM version x86
# these is no x64 version that I know of.
# This doesn't cover per-user installs (the EXE).
# - JT

$AppName = "Zoom"

# Sweep installed apps and pull the uninstall string.
# This is meant to solve the problem of uninstalling auto-patched apps. with automation.
# Any patches will change the GUID, so we want to run msiexec against that dynamically.
# The config manager client can unisntall with this script, with no regard to the version that's actually installed.
# This was tested on 4.x and 5.x MSIs.

##################################################################

# Kill running instanced of this app. Lots of helper apps live in the background...

$AppPath = (${env:ProgramFiles(x86)} + "\Zoom\bin\*")

Get-Process | ? {$_.path -like $AppPath } | % {$_ | Stop-Process -Force -Verbose}

#######################################################

## Look for specific architecture:

$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 correct 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