Create a Custom Detection Script for Lansweeper LsAgent (PowerShell)

Microsoft Endpoint Manager Configuration Manager (MEMCM / SCCM) and Microsoft Intune use Detection Rules to determine the presence of Applications & Win32 Apps. The detection rules ensure that application installations only begin to run if the application is not already installed on the device. This article will serve as an informative guide and give you a clear understanding of how to create an updated custom detection script for each new version of the Lansweeper LsAgent using PowerShell.

How to Create a Custom Detection Script for Lansweeper LsAgent

Lansweeper LsAgent (File Detection Method)

• Install the version of Lansweeper LsAgent you want to deploy on a test box or VM
  • Check out the following posts for further details
    • Lansweeper LsAgent Silent Install (How-To Guide)
    • Lansweeper LsAgent Install and Uninstall (PowerShell)
• Open Windows PowerShell ISE by Right-Clicking on Windows PowerShell ISE and selecting Run as Administrator
• Copy the following code into the Windows PowerShell ISE

## Check for Lansweeper LsAgent (File Detection Method)
$LsAgentExe = (Get-ChildItem -Path "C:\Program Files\LansweeperAgent\LansweeperAgentService.exe","C:\Program Files (x86)\LansweeperAgent\LansweeperAgentService.exe" -ErrorAction SilentlyContinue)
$LsAgentExe.FullName
$LsAgentPath = $($LsAgentExe.FullName).Replace("C:\Program Files\","").Replace("C:\Program Files (x86)\","")
$FileVersion = (Get-Item -Path "$($LsAgentExe.FullName)" -ErrorAction SilentlyContinue).VersionInfo.FileVersion

## Create Text File with Lansweeper LsAgent File Detection Method
$FilePath = "C:\Windows\Temp\LsAgent_Detection_Method.txt"
New-Item -Path "$FilePath" -Force
Set-Content -Path "$FilePath" -Value "If([String](Get-Item -Path `"`$Env:ProgramFiles\$LsAgentPath`",`"`${Env:ProgramFiles(x86)}\$LsAgentPath`" -ErrorAction SilentlyContinue).VersionInfo.FileVersion -ge `"$FileVersion`"){"
Add-Content -Path "$FilePath" -Value "Write-Host `"Installed`""
Add-Content -Path "$FilePath" -Value "Exit 0"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "else {"
Add-Content -Path "$FilePath" -Value "Exit 1"
Add-Content -Path "$FilePath" -Value "}"
Invoke-Item $FilePath

• Click Run Script (F5)
• A text file will open with the Lansweeper LsAgent Detection Method script required to detect the current version of Lansweeper LsAgent that is installed on the device you are running the script from.

Example:

If([String](Get-Item -Path "$Env:ProgramFiles\LansweeperAgent\LansweeperAgentService.exe","${Env:ProgramFiles(x86)}\LansweeperAgent\LansweeperAgentService.exe" -ErrorAction SilentlyContinue).VersionInfo.FileVersion -ge "10.0.1.1"){
Write-Host "Installed"
Exit 0
}
else {
Exit 1
}

• Copy the Lansweeper LsAgent Detection Method script content into the Custom Detection Rules (Script)
• Microsoft Endpoint Manager Configuration Manager (MEMCM / SCCM)
  • https://docs.microsoft.com/en-us/mem/configmgr/apps/deploy-use/create-applications#bkmk_detect-script
• Microsoft Intune
  • https://docs.microsoft.com/en-us/mem/intune/apps/apps-win32-add

---

Lansweeper LsAgent (Registry Detection Method)

• Install the version of Lansweeper LsAgent you want to deploy on a test box or VM
  • Check out the following posts for further details
    • Lansweeper LsAgent Silent Install (How-To Guide)
    • Lansweeper LsAgent Install and Uninstall (PowerShell)
• Open Windows PowerShell ISE by Right-Clicking on Windows PowerShell ISE and selecting Run as Administrator
• Copy the following code into the Windows PowerShell ISE

## Check for Lansweeper LsAgent (Registry Detection Method)
$LsAgent = Get-ChildItem -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall","HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall" | Get-ItemProperty | Where-Object {$_.DisplayName -match 'LsAgent' } | Select-Object -Property DisplayName, DisplayVersion, PSChildName
$LsAgent.DisplayVersion
$LsAgent.PSChildName

## Create Text File with Lansweeper LsAgent Registry Detection Method
$FilePath = "C:\Windows\Temp\LsAgent_Detection_Method.txt"
New-Item -Path "$FilePath" -Force
Set-Content -Path "$FilePath" -Value "If([Version](Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$($LsAgent.PSChildName)','HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\$($LsAgent.PSChildName)' -Name DisplayVersion -ea SilentlyContinue) -ge '$($LsAgent.DisplayVersion)') {"
Add-Content -Path "$FilePath" -Value "Write-Host `"Installed`""
Add-Content -Path "$FilePath" -Value "Exit 0"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "else {"
Add-Content -Path "$FilePath" -Value "Exit 1"
Add-Content -Path "$FilePath" -Value "}"
Invoke-Item $FilePath

• Click Run Script (F5)
• A text file will open with the Lansweeper LsAgent Detection Method script required to detect the current version of Lansweeper LsAgent that is installed on the device you are running the script from.

Example:

If([Version](Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\LsAgent 10.0.1.1','HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\LsAgent 10.0.1.1' -Name DisplayVersion -ea SilentlyContinue) -ge '10.0.1.1') {
Write-Host "Installed"
Exit 0
}
else {
Exit 1
}

• Copy the Lansweeper LsAgent Detection Method script content into the Custom Detection Rules (Script)
• Microsoft Endpoint Manager Configuration Manager (MEMCM / SCCM)
  • https://docs.microsoft.com/en-us/mem/configmgr/apps/deploy-use/create-applications#bkmk_detect-script
• Microsoft Intune
  • https://docs.microsoft.com/en-us/mem/intune/apps/apps-win32-add

Always make sure to test everything in a development environment prior to implementing anything into production. The information in this article is provided “As Is” without warranty of any kind.