How to uninstall the Atera agent by Powershell Script
Regarding your query, what I would recommend, after you rename the PC, make sure to reboot it.
After that, I would recommend to run the following script using PowerShell ISE as admin, locally :
Once the script is finished, reboot the device again. In order for the registry keys to be removed / updated, reboot would be needed.
After this, I would recommend using the CMD installation method instead of .MSI in order to install Atera Agent and assign it to the right customer.
Function Get-UninstallCodes ([string]$DisplayName) {
‘HKLM:SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall’, ‘HKLM:SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall’ | ForEach-Object {
Get-ChildItem -Path $_ -ErrorAction SilentlyContinue | ForEach-Object {
If ( $(Get-ItemProperty -Path $_.PSPath -Name ‘DisplayName’ -ErrorAction SilentlyContinue) -and ($(Get-ItemPropertyValue -Path $_.PSPath -Name ‘DisplayName’ -ErrorAction SilentlyContinue) -eq $DisplayName) ) {
$str = (Get-ItemPropertyValue -Path $_.PSPath -Name ‘UninstallString’)
$UninstallCodes.Add($str.Substring(($str.Length – 37),36)) | Out-Null
}
}
}
}
Function Get-ProductKeys ([string]$ProductName) {
Get-ChildItem -Path ‘HKCR:Installer\Products’ | ForEach-Object {
If ( $(Get-ItemProperty -Path $_.PSPath -Name ‘ProductName’ -ErrorAction SilentlyContinue) -and ($(Get-ItemPropertyValue -Path $_.PSPath -Name ‘ProductName’ -ErrorAction SilentlyContinue) -eq $ProductName) ) {
$ProductKeys.Add($_.PSPath.Substring(($_.PSPath.Length – 32))) | Out-Null
}
}
}
Function Get-ServiceStatus ([string]$Name) { (Get-Service -Name $Name -ErrorAction SilentlyContinue).Status }
Function Stop-RunningService ([string]$Name) {
If ( $(Get-ServiceStatus -Name $Name) -eq “Running” ) { Write-Output “Stopping : ${Name} service” ; Stop-Service -Name $Name -Force }
}
Function Remove-StoppedService ([string]$Name) {
$s = (Get-ServiceStatus -Name $Name)
If ( $s ) {
If ( $s -eq “Stopped” ) {
Write-Output “Deleting : ${Name} service”
Start-Process “sc.exe” -ArgumentList “delete ${Name}” -Wait
}
} Else { Write-Output “Not Found: ${Name} service” }
}
Function Stop-RunningProcess ([string]$Name) {
$p = (Get-Process -Name $_ -ErrorAction SilentlyContinue)
If ( $p ) { Write-Output “Stopping : ${Name}.exe” ; $p | Stop-Process -Force }
Else { Write-Output “Not Found: ${Name}.exe is not running”}
}
Function Remove-Path ([string]$Path) {
If ( Test-Path $Path ) {
Write-Output “Deleting : ${Path}”
Remove-Item $Path -Recurse -Force
} Else { Write-Output “Not Found: ${Path}” }
}
Function Get-AllExeFiles ([string]$Path) {
If ( Test-Path $Path ) {
Get-ChildItem -Path $Path -Filter *.exe -Recurse | ForEach-Object { $ExeFiles.Add($_.BaseName) | Out-Null }
}
}
# Mount HKEY_CLASSES_ROOT registry hive
New-PSDrive -Name HKCR -PSProvider Registry -Root HKEY_CLASSES_ROOT | Out-Null
#######
# START: Information gathering
#######
# Get MSI package codes from the uninstall key
$UninstallCodes = New-Object System.Collections.ArrayList
‘AteraAgent’, ‘Splashtop for RMM’, ‘Splashtop Streamer’ | ForEach-Object { Get-UninstallCodes -DisplayName $_ }
# Get product keys from the list of installed products
$ProductKeys = New-Object System.Collections.ArrayList
‘AteraAgent’, ‘Splashtop for RMM’, ‘Splashtop Streamer’ | ForEach-Object { Get-ProductKeys -ProductName $_ }
# Define all the directories we’ll need to cleanup at the end of this script
$Directories = @(
“${Env:ProgramFiles}\ATERA Networks”,
“${Env:ProgramFiles(x86)}\ATERA Networks”,
“${Env:ProgramFiles}\Splashtop\Splashtop Remote\Server”,
“${Env:ProgramFiles(x86)}\Splashtop\Splashtop Remote\Server”,
“${Env:ProgramFiles}\Splashtop\Splashtop Software Updater”,
“${Env:ProgramFiles(x86)}\Splashtop\Splashtop Software Updater”,
“${Env:ProgramData}\Splashtop\Splashtop Software Updater”
)
# Get all possible relevant exe files so we can make sure they’re closed later on
$ExeFiles = New-Object System.Collections.ArrayList
“${Env:ProgramFiles}\ATERA Networks” | ForEach-Object { Get-AllExeFiles -Path $_ }
# Define a list of services we need to stop and delete (if necessary)
$ServiceList = @(
‘AteraAgent’,
‘SplashtopRemoteService’,
‘SSUService’
)
# Define a list of registry keys we’ll delete
$RegistryKeys = @(
‘HKLM:SOFTWARE\ATERA Networks’,
‘HKLM:SOFTWARE\Splashtop Inc.’,
‘HKLM:SOFTWARE\WOW6432Node\Splashtop Inc.’
)
#######
# END: Information gathering
#######
# Uninstall each MSI package code in $UninstallCodes
$UninstallCodes | ForEach-Object { Write-Output “Uninstall: ${_}” ; Start-Process “msiexec.exe” -ArgumentList “/X{${_}} /qn” -Wait }
# Stop services if they’re still running
$ServiceList | ForEach-Object { Stop-RunningService -Name $_ }
# Terminate all relevant processes that may still be running
$ExeFiles.Add(‘reg’) | Out-Null
$ExeFiles | ForEach-Object { Stop-RunningProcess $_ }
# Delete services if they’re still present
$ServiceList | ForEach-Object { Remove-StoppedService -Name $_ }
# Delete products from MSI installer registry
$ProductKeys | ForEach-Object { Remove-Path -Path “HKCR:Installer\Products\${_}” }
# Unmount HKEY_CLASSES_ROOT registry hive
Remove-PSDrive -Name HKCR
# Delete registry keys
$RegistryKeys | ForEach-Object { Remove-Path -Path $_ }
# Delete remaining directories
#Write-Host “Waiting for file locks to be freed” ; Start-Sleep -Seconds 4
$Directories | ForEach-Object { Remove-Path -Path $_ }