WebEx_Teams_x64-Uninstall_AllUsers.ps1

# Universal MSI uninstaller for Cisco Teams x64 - Full system Install
# This is weird because the app is designed to be uninstalled per-user.
# This script only helps if you installed for SYSTEM instead.
# Still supported anyway.
# - JT

$AppName = "Webex Teams"

# 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 uninstall with this script, with no regard to the version that's actually installed.


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

# Kill processes.

$ProcessNames = @("CiscoCollabHost","CiscoCollabHostCef")

Get-Process | ? {$_.name -in $ProcessNames} | % {$_ | Stop-Process -Force -Verbose}

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

## Look for the correct 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 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

# !!!! No detailed info here. No version etc. Just name and guid.

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

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

$AppGuid = $AppInfo.PSChildName

# With all this information, run the uninstall command.

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