Create a Custom Detection Script for 8×8 Work (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 8×8 Work using PowerShell.

How to Create a Custom Detection Script for 8×8 Work

8×8 Work EXE (Registry Detection Method)

## Check for 8x8 Work EXE (Registry Detection Method)
$8x8Work = Get-ChildItem -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Uninstall" | Get-ItemProperty | Where-Object {$_.DisplayName -match '8x8 Work' } | Select-Object -Property DisplayName, DisplayVersion, PSChildName
$8x8Work.DisplayVersion
$8x8Work.PSChildName


## Create Text File with 8x8 Work EXE Registry Detection Method
$FilePath = "C:\Windows\Temp\8x8_Work_Detection_Method.txt"
New-Item -Path "$FilePath" -Force
Set-Content -Path "$FilePath" -Value "Function Get-LoggedOnUserSID {"
Add-Content -Path "$FilePath" -Value "## ref https://www.reddit.com/r/PowerShell/comments/7coamf/query_no_user_exists_for/"
Add-Content -Path "$FilePath" -Value "## ref https://smsagent.blog/2022/03/03/user-context-detection-rules-for-intune-win32-apps/"
Add-Content -Path "$FilePath" -Value "`$header=@('SESSIONNAME', 'USERNAME', 'ID', 'STATE', 'TYPE', 'DEVICE')"
Add-Content -Path "$FilePath" -Value "`$Sessions = query session"
Add-Content -Path "$FilePath" -Value "[array]`$ActiveSessions = `$Sessions | Select -Skip 1 | Where {`$_ -match ""Active""}"
Add-Content -Path "$FilePath" -Value "If (`$ActiveSessions.Count -ge 1)"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "`$LoggedOnUsers = @()"
Add-Content -Path "$FilePath" -Value "`$indexes = `$header | ForEach-Object {(`$Sessions[0]).IndexOf("" `$_"")}"
Add-Content -Path "$FilePath" -Value "for(`$row=0; `$row -lt `$ActiveSessions.Count; `$row++)"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "`$obj=New-Object psobject"
Add-Content -Path "$FilePath" -Value "for(`$i=0; `$i -lt `$header.Count; `$i++)"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "`$begin=`$indexes[`$i]"
Add-Content -Path "$FilePath" -Value "`$end=if(`$i -lt `$header.Count-1) {`$indexes[`$i+1]} else {`$ActiveSessions[`$row].length}"
Add-Content -Path "$FilePath" -Value "`$obj | Add-Member NoteProperty `$header[`$i] (`$ActiveSessions[`$row].substring(`$begin, `$end-`$begin)).trim()"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "`$LoggedOnUsers += `$obj"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "`$LoggedOnUser = `$LoggedOnUsers[0]"
Add-Content -Path "$FilePath" -Value "`$LoggedOnUserSID = Get-ItemProperty ""HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\SessionData\`$(`$LoggedOnUser.ID)"" -Name LoggedOnUserSID -ErrorAction SilentlyContinue |"
Add-Content -Path "$FilePath" -Value "Select -ExpandProperty LoggedOnUserSID"
Add-Content -Path "$FilePath" -Value "Return `$LoggedOnUserSID"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "`$LoggedOnUserSID = Get-LoggedOnUserSID"
Add-Content -Path "$FilePath" -Value "If (`$null -ne `$LoggedOnUserSID)"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "If (`$null -eq (Get-PSDrive -Name HKU -ErrorAction SilentlyContinue))"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "`$null = New-PSDrive -PSProvider Registry -Name HKU -Root HKEY_USERS"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "`$i = Get-Item ""HKU:\`$LoggedOnUserSID\Software\Microsoft\Windows\CurrentVersion\Uninstall\$($8x8Work.PSChildName)"" -ErrorAction SilentlyContinue"
Add-Content -Path "$FilePath" -Value "if (`$null -eq `$i)"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "## Key Does NOT Exist"
Add-Content -Path "$FilePath" -Value """Key Does NOT Exist"""
Add-Content -Path "$FilePath" -Value "Exit 1"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "else"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "`$r = Get-ItemProperty ""HKU:\`$LoggedOnUserSID\Software\Microsoft\Windows\CurrentVersion\Uninstall\$($8x8Work.PSChildName)"" -Name 'DisplayVersion' -ErrorAction SilentlyContinue |"
Add-Content -Path "$FilePath" -Value "Select -ExpandProperty 'DisplayVersion'"
Add-Content -Path "$FilePath" -Value "If (`$r -ge '$($8x8Work.DisplayVersion)')"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "## Installed"
Add-Content -Path "$FilePath" -Value """Installed"""
Add-Content -Path "$FilePath" -Value "Exit 0"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "else"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "## Correct App Version NOT Installed"
Add-Content -Path "$FilePath" -Value """Correct App Version NOT Installed"""
Add-Content -Path "$FilePath" -Value "Exit 1"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "}"
Add-Content -Path "$FilePath" -Value "Else"
Add-Content -Path "$FilePath" -Value "{"
Add-Content -Path "$FilePath" -Value "## No Logged on User Detected"
Add-Content -Path "$FilePath" -Value """No Logged on User Detected"""
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 8×8 Work Detection Method script required to detect the current version of 8×8 Work that is installed on the device you are running the script from.

Example:

Function Get-LoggedOnUserSID {
## ref https://www.reddit.com/r/PowerShell/comments/7coamf/query_no_user_exists_for/
## ref https://smsagent.blog/2022/03/03/user-context-detection-rules-for-intune-win32-apps/
$header=@('SESSIONNAME', 'USERNAME', 'ID', 'STATE', 'TYPE', 'DEVICE')
$Sessions = query session
[array]$ActiveSessions = $Sessions | Select -Skip 1 | Where {$_ -match "Active"}
If ($ActiveSessions.Count -ge 1)
{
$LoggedOnUsers = @()
$indexes = $header | ForEach-Object {($Sessions[0]).IndexOf(" $_")}
for($row=0; $row -lt $ActiveSessions.Count; $row++)
{
$obj=New-Object psobject
for($i=0; $i -lt $header.Count; $i++)
{
$begin=$indexes[$i]
$end=if($i -lt $header.Count-1) {$indexes[$i+1]} else {$ActiveSessions[$row].length}
$obj | Add-Member NoteProperty $header[$i] ($ActiveSessions[$row].substring($begin, $end-$begin)).trim()
}
$LoggedOnUsers += $obj
}
$LoggedOnUser = $LoggedOnUsers[0]
$LoggedOnUserSID = Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\SessionData\$($LoggedOnUser.ID)" -Name LoggedOnUserSID -ErrorAction SilentlyContinue |
Select -ExpandProperty LoggedOnUserSID
Return $LoggedOnUserSID
}
}
$LoggedOnUserSID = Get-LoggedOnUserSID
If ($null -ne $LoggedOnUserSID)
{
If ($null -eq (Get-PSDrive -Name HKU -ErrorAction SilentlyContinue))
{
$null = New-PSDrive -PSProvider Registry -Name HKU -Root HKEY_USERS
}
$i = Get-Item "HKU:\$LoggedOnUserSID\Software\Microsoft\Windows\CurrentVersion\Uninstall\8x8-Work" -ErrorAction SilentlyContinue
if ($null -eq $i)
{
## Key Does NOT Exist
"Key Does NOT Exist"
Exit 1
}
else
{
$r = Get-ItemProperty "HKU:\$LoggedOnUserSID\Software\Microsoft\Windows\CurrentVersion\Uninstall\8x8-Work" -Name 'DisplayVersion' -ErrorAction SilentlyContinue |
Select -ExpandProperty 'DisplayVersion'
If ($r -ge '7.24.3-b10')
{
## Installed
"Installed"
Exit 0
}
else
{
## Correct App Version NOT Installed
"Correct App Version NOT Installed"
Exit 1
}
}
}
Else
{
## No Logged on User Detected
"No Logged on User Detected"
Exit 1
}

8×8 Work MSI (File Detection Method)

## Check for 8x8 Work MSI (File Detection Method)
$8x8WorkExe = (Get-ChildItem -Path "C:\Program Files\8x8 Inc\8x8 Work\8x8 Work.exe" -ErrorAction SilentlyContinue)
$8x8WorkExe.FullName
$8x8WorkPath = $($8x8WorkExe.FullName).Replace("C:\Program Files\","")
$FileVersion = (Get-Item -Path "$($8x8WorkExe.FullName)" -ErrorAction SilentlyContinue).VersionInfo.FileVersion

## Create Text File with 8x8 Work MSI File Detection Method
$FilePath = "C:\Windows\Temp\8x8_Work_Detection_Method.txt"
New-Item -Path "$FilePath" -Force
Set-Content -Path "$FilePath" -Value "If([String](Get-Item -Path `"`$Env:ProgramFiles\$8x8WorkPath`" -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 8×8 Work Detection Method script required to detect the current version of 8×8 Work that is installed on the device you are running the script from.

Example:

If([String](Get-Item -Path "$Env:ProgramFiles\8x8 Inc\8x8 Work\8x8 Work.exe" -ErrorAction SilentlyContinue).VersionInfo.FileVersion -ge "7.24.3.10"){
Write-Host "Installed"
Exit 0
}
else {
Exit 1
}

8×8 Work MSI (Registry Detection Method)

## Check for 8x8 Work MSI (Registry Detection Method)
$8x8Work = Get-ChildItem -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" | Get-ItemProperty | Where-Object {$_.DisplayName -match '8x8 Work' } | Select-Object -Property DisplayName, DisplayVersion, PSChildName
$8x8Work.DisplayVersion
$8x8Work.PSChildName

## Create Text File with 8x8 Work MSI Registry Detection Method
$FilePath = "C:\Windows\Temp\8x8_Work_Detection_Method.txt"
New-Item -Path "$FilePath" -Force
Set-Content -Path "$FilePath" -Value "If([Version](Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$($8x8Work.PSChildName)' -Name DisplayVersion -ea SilentlyContinue) -ge '$($8x8Work.DisplayVersion)') {"
Add-Content -Path "$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 8×8 Work Detection Method script required to detect the current version of 8×8 Work that is installed on the device you are running the script from.

Example:

If([Version](Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{8B1ECC23-24AE-4741-B46F-DF092675211A}' -Name DisplayVersion -ea SilentlyContinue) -ge '7.24.3.10') {
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.