Create a Custom Detection Script for Inno Script Studio (PowerShell)

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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 Inno Script Studio using PowerShell.

How to Create a Custom Detection Script for Inno Script Studio

Inno Script Studio (File Detection Method)

## Check for Inno Script Studio (File Detection Method)
$ISStudioExe = (Get-ChildItem -Path "C:\Program Files\Inno Script Studio\ISStudio.exe","C:\Program Files (x86)\Inno Script Studio\ISStudio.exe" -ErrorAction SilentlyContinue)
$ISStudioExe.FullName
$ISStudioPath = $($ISStudioExe.FullName).Replace("C:\Program Files\","").Replace("C:\Program Files (x86)\","")
$FileVersion = (Get-Item -Path "$($ISStudioExe.FullName)" -ErrorAction SilentlyContinue).VersionInfo.FileVersion

## Create Text File with Inno Script Studio File Detection Method
$FilePath = "C:\Windows\Temp\Inno_Script_Studio_Detection_Method.txt"
New-Item -Path "$FilePath" -Force
Set-Content -Path "$FilePath" -Value "If([String](Get-Item -Path `"`$Env:ProgramFiles\$ISStudioPath`",`"`${Env:ProgramFiles(x86)}\$ISStudioPath`" -ErrorAction SilentlyContinue).VersionInfo.FileVersion -ge `"$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 Inno Script Studio Detection Method script required to detect the current version of Inno Script Studio that is installed on the device you are running the script from.

Example: 

If([String](Get-Item -Path "$Env:ProgramFiles\Inno Script Studio\ISStudio.exe","${Env:ProgramFiles(x86)}\Inno Script Studio\ISStudio.exe" -ErrorAction SilentlyContinue).VersionInfo.FileVersion -ge "2.5.1.0"){
Write-Host "Installed"
Exit 0
}
else {
Exit 1
}

Inno Script Studio (Registry Detection Method)

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

## Create Text File with Inno Script Studio Registry Detection Method
$FilePath = "C:\Windows\Temp\Inno_Script_Studio_Detection_Method.txt"
New-Item -Path "$FilePath" -Force
Set-Content -Path "$FilePath" -Value "If([Version](Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$($ISStudio.PSChildName)','HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\$($ISStudio.PSChildName)' -Name DisplayVersion -ea SilentlyContinue) -ge '$($ISStudio.DisplayVersion)') {"
Add-Content -Path "$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 Inno Script Studio Detection Method script required to detect the current version of Inno Script Studio that is installed on the device you are running the script from.

Example: 

If([Version](Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{7C22BD69-9939-43CE-B16E-437DB2A39492}_is1','HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{7C22BD69-9939-43CE-B16E-437DB2A39492}_is1' -Name DisplayVersion -ea SilentlyContinue) -ge '2.5.1.0') {
Write-Host "Installed"
Exit 0
}
else {
Exit 1
}

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.