Uninstalling and Removing Configuration Manager (SCCM) Client

This PowerShell script is designed to uninstall the SCCM client (System Center Configuration Manager) from a system. It begins by checking if the ccmsetup.exe file exists and then proceeds with the uninstallation process. It also forcefully stops associated services, such as ccmsetup, CcmExec, smstsmgr, and CmRcService.

Additionally, the script removes relevant WMI namespaces (ccm and sms) and deletes associated registry keys and directories under C:\Windows and HKLM:\SOFTWARE\Microsoft. This cleanup ensures that all traces of the SCCM client are removed from the system, including files like SMSCFG.ini and other configuration files.

Here is the Script:

$CCMpath = 'C:\Windows\ccmsetup\ccmsetup.exe'

if (Test-Path $CCMpath) {

    Start-Process -FilePath $CCMpath -Args "/uninstall" -Wait -NoNewWindow

    $CCMProcess = Get-Process ccmsetup -ErrorAction SilentlyContinue

        try{
            $CCMProcess.WaitForExit()
            }catch{
 

            }
}

# Stop Services
Stop-Service -Name ccmsetup -Force -ErrorAction SilentlyContinue
Stop-Service -Name CcmExec -Force -ErrorAction SilentlyContinue
Stop-Service -Name smstsmgr -Force -ErrorAction SilentlyContinue
Stop-Service -Name CmRcService -Force -ErrorAction SilentlyContinue

$CCMProcess = Get-Process ccmexec -ErrorAction SilentlyContinue
try{

    $CCMProcess.WaitForExit()

}catch{

}

 
# Remove WMI Namespaces
Get-WmiObject -Query "SELECT * FROM __Namespace WHERE Name='ccm'" -Namespace root | Remove-WmiObject
Get-WmiObject -Query "SELECT * FROM __Namespace WHERE Name='sms'" -Namespace root\cimv2 | Remove-WmiObject

$CurrentPath = “HKLM:\SYSTEM\CurrentControlSet\Services”
Remove-Item -Path $CurrentPath\CCMSetup -Force -Recurse -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\CcmExec -Force -Recurse -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\smstsmgr -Force -Recurse -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\CmRcService -Force -Recurse -ErrorAction SilentlyContinue

$CurrentPath = “HKLM:\SOFTWARE\Microsoft”
Remove-Item -Path $CurrentPath\CCM -Force -Recurse -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\CCMSetup -Force -Recurse -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\SMS -Force -Recurse -ErrorAction SilentlyContinue

Remove-Item -Path $CurrentPath\DeviceManageabilityCSP -Force -Recurse -ErrorAction SilentlyContinue

$CurrentPath = $env:WinDir
Remove-Item -Path $CurrentPath\CCM -Force -Recurse -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\ccmsetup -Force -Recurse -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\ccmcache -Force -Recurse -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\SMSCFG.ini -Force -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\SMS*.mif -Force -ErrorAction SilentlyContinue
Remove-Item -Path $CurrentPath\SMS*.mif -Force -ErrorAction SilentlyContinue