Looking for pograms on client machines - powershell

Question

i got a client who wants to find all of the companys installed programs i wrote a script but i dont want the script show me the same same programs for each comuter every time,i want to see overall installations
$computers = get-adcomputers -filter *
foreach($computer in $computers){
Get-ItemProperty
HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\* |
Select-Object DisplayName, DisplayVersion, Publisher, InstallDate | Format-
Table –AutoSize}

Answer 1

I did not test this, but you can try
$computers = (Get-ADComputer -Filter *).DNSHostName # or use .Name or .CN
$software = Invoke-Command -ComputerName $computers {
Get-ItemProperty -Path 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*'
}
$software | Select-Object DisplayName, DisplayVersion, Publisher, InstallDate -Unique |
Format-Table -AutoSize
P.S.1 You need to have admin permissions on all computers to do this
P.S.2 Don't forget there is also HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
Apparently you are running into problems where computers are off-line.
To overcome that, you need to add a loop so you can test if a machine is reachable or not.
$computers = (Get-ADComputer -Filter *).Name # or use .CN
# loop through the collection and (if reachable) get the software list
$result = foreach ($computer in $computers) {
# test if the computer is online
if (Test-Connection -ComputerName $computer -Count 1 -Quiet) {
# output the properties you need to get collected in variable $result
Invoke-Command -ComputerName $computer {
Get-ItemProperty -Path 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*'
} | Select-Object DisplayName, DisplayVersion, Publisher, InstallDate
}
else {
Write-Warning "Computer $computer is off-line"
}
}
$software = $result | Select-Object * -Unique
# output to console
$software | Format-Table -AutoSize
# output to CSV file
$software | Export-Csv -Path 'D:\Software.csv' -NoTypeInformation