Use PowerShell to find unmanaged computers

The Issue

So like many companies out there, there can be many computers in your SCCM database and Active Directory that are one or more of the following:

• Stale AD Object
• Non standard computer name (likely meaning it wasn’t built with your awesome automation)
• Sitting on the Computers container in AD (also likely meaning it wasn’t built with your awesome automation)
• Inactive or non-existent SCCM client

When looking through your SCCM database or reviewing AD Users and Computers it’s not readily apparent which computers are still legitimate and should be being managed by SCCM.  I have written PowerShell scripts in the past that review AD on a schedule and take action like moving an object into a “Stale” OU for future deletion, or simply emailing the list of stale machines to an Admin to take action.  Today’s script is a seek and report script only but could easily be modified to take any actions you wish once you find the machines that are not being managed.

A Solution

I created a PowerShell script that will look at both AD and SCCM to find machines we are deeming “unmanaged”, gather additional data about the computer, including trying to find out who the last logged on user is and if they are actively logged on, formatting the data and dumping it into 2 difference CSV files.  All objects are crossed referenced from AD and SCCM to gather as much data as we can.  Lastly it generates an HTML report with 2 tables containing said data, then emails this report along with the CSV attachments to the person or DL you wish to notify.

Note: This script was written to run on the SCCM Primary Site server however it could be run remotely using a PSSession, or on a machine that has the SCCM Admin console installed (not tested but should work).

The first thing you will need to do is create a new collection if you don’t already have one that contains all SCCM Computer objects that do not have a client.  Hopefully you already have one as you continue to strive for 100% client saturation, but if not, here’s a Collection query you can use:

Non-Client Collection Query

MS DOS

select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.Client != "1" or SMS_R_System.Client is null and SMS_R_System.OperatingSystemNameandVersion like "%NT%"

1

select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.Client != "1" or SMS_R_System.Client is null and SMS_R_System.OperatingSystemNameandVersion like "%NT%"

The last line of that query is useful when you have non-Windows OS devices like Intune MDM objects.

Once you have your Collection you will need the Collection ID as a script parameter so make note of it.  You can simply go to the properties of the collection and its right there on the General tab.

Next, save the content at the bottom of this post as a PowerShell script then execute it with the required parameters using an account that has at least Read permissions to SCCM Computer objects, and local Admin permissions to the remote computers/servers.  * The admin permissions are used when trying to connect to the remote machine to find the last logged on user information.

Here’s what an example of the report looks like.  As mentioned above we have split the report in two.  One table/CSV for Stale unmanaged objects, and one for Recent unmanaged objects.  Basically just the two sides of the number of days you choose to look for.

Source from : http://model-technology.com/use-powershell-to-find-unmanaged-computers/

The Stale table:


And underneath that the Recent table:


We have found this to be incredibly helpful in tracking down machines that should be managed and are not, and machines that need to be cleaned up in AD and/or SCCM.

As always you should run this script first in a lab environment before executing in production.  And as always, no warranty is granted for the outcome of this script.  Use at your own will.

Without further ado, here’s the PowerShell.  If you grab this script and make it better (there’s always a better way) then please drop me a line at william.bracken@model-technology.com. Would love to see any evolutions!

Get-UnmanagedDevices-Report.ps1

PowerShell

<# .SYNOPSIS Emails report of unmanaged devices with CSV attachments. .DESCRIPTION Pulls all devices from AD that have not changed their password in X days. Pulls all SCCM unmanaged devices. Combines this data and checks for last logon user, then pulls the following information into a report: Computer | InSCCM | Client | OU | Last SCCM Activity | Last AD Logon | User | Time | Currently Logged in | Operating System | Additional Info .REQUIREMENTS Designed to run from the SCCM Server Account running must have permissions to read CM Objects Account running must have permissions to read AD Computer objects and atrributes .PARAMETER Daysold Mandatory string parameter; The number of days since machines in AD have changed their password (Default AD policy is every 30 days. Recommend this parameter be 90 days). .PARAMETER DomainSuffix Mandatory string parameter; Your internal domain suffix. (Example: contoso.com) .PARAMETER StaleCollectionID Mandatory string parameter; The ID of a collection you create that holds devices that have no client - Collection Query to use: select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name, SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup, SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.Client != "1" or SMS_R_System.Client is null and SMS_R_System.OperatingSystemNameandVersion like "%NT%" .PARAMETER SMTPServer Mandatory string parameter; The FQDN of your SMTP server .PARAMETER SMTPTo Mandatory string parameter; The email address or DL you want to sent the report to .PARAMETER $SMTPFrom Mandatory string parameter; The email address you want to send the report from .EXAMPLE (Office 365 Exchange Online) .\Get-UnmanagedDevices-Report.ps1 -DaysOld 90 -DomainSuffix contoso.com -StaleCollectionID P0120304 -SMTPServer contoso-com01c.mail.protection.outlook.com -SMTPTo DL-Notifications@contoso.com -SMTPFrom Automation@contoso.com .EXAMPLE (On premises Exchange) .\Get-UnmanagedDevices-Report.ps1 -DaysOld 90 -DomainSuffix contoso.com -StaleCollectionID P0120304 -SMTPServer smtp.contoso.com -SMTPTo DL-Notifications@contoso.com -SMTPFrom Automation@contoso.com .NOTES This script is written to email using SMTP without a named account. You will need to adjust if you need to send from a mailbox. Written by William Bracken (Borrowed parts of other scripts of course) Model Technology Solutions .VERSION Version 1.0 - 01/18/2017 Script creation Version 1.1 - 01/25/2017 Added parameters .LINK http://model-technology.com #> [CmdletBinding()] param ( [Parameter(Mandatory=$True)] [string]$DaysOld, [Parameter(Mandatory=$True)] [string]$DomainSuffix, [Parameter(Mandatory=$True)] [string]$StaleCollectionID, [Parameter(Mandatory=$True)] [string]$SMTPServer, [Parameter(Mandatory=$True)] [string]$SMTPFrom, [Parameter(Mandatory=$True)] [string]$SMTPTo ) #------------------------------------------------ # Get Last Logon user data #------------------------------------------------ Function Get-LastLogon { [CmdletBinding()] param( [Parameter()] [String]$ComputerName, [String]$FilterSID, [String]$WQLFilter="NOT SID = 'S-1-5-18' AND NOT SID = 'S-1-5-19' AND NOT SID = 'S-1-5-20'" ) # Adjusting ErrorActionPreference to stop on all errors $TempErrAct = $ErrorActionPreference $ErrorActionPreference = "Stop" $NewUser = '' $Time = '' $CurrentlyLoggedOn = '' $AdditionalInfo = '' If ($FilterSID) { $WQLFilter = $WQLFilter + " AND NOT SID = `'$FilterSID`'" } Try { Test-Connection $Computer -Count 1 | Out-Null $Win32User = Get-WmiObject -Class Win32_UserProfile -Filter $WQLFilter -ComputerName $Computer $LastUser = $Win32User | Sort-Object -Property LastUseTime -Descending | Select-Object -First 4 Foreach ($sid in $LastUser) { $Loaded = $sid.Loaded If (!($sid.LastuseTime -eq $null)) { $Script:Time = ([WMI]'').ConvertToDateTime($sid.LastUseTime) #Convert SID to Account for friendly display $Script:UserSID = New-Object System.Security.Principal.SecurityIdentifier($sid.SID) Try { $User = $Script:UserSID.Translate([System.Security.Principal.NTAccount]) # ================================= # Disregard service accounts (accounts that have S_ in the name. Adjust for your organization) If ($user -notlike "*s_*") { $NewUser = $User } } Catch { $_.Exception.Message } } Else { } } # If NewUser is empty set for report If (!($NewUser)) { $NewUser = "None Found" } $Time = $Script:Time $CurrentlyLoggedOn = $Loaded $AdditionalInfo = "N/A" }#End Try Catch { # Set Variables for PSObject For Output $Time = "N/A" $CurrentlyLoggedOn = "N/A" If ($_.Exception.Message -Like "*Some or all identity references could not be translated*") { Write-Warning "Unable to Translate $Script:UserSID, try filtering the SID `nby using the -FilterSID parameter." Write-Warning "It may be that $Script:UserSID is local to $Computer, Unable to translate remote SID" } elseif ($_.Exception.Message -like "*No such host is known*") { # Set AdditionalInfo for PSObject $AdditionalInfo = "Ping returned Invalid Hostname" } elseif ($_.Exception.Message -like "*Error due to lack of resources*") { $AdditionalInfo = "Ping returned no reply" } elseif ($_.Exception.Message -like "*A non-recoverable error occurred*") { $AdditionalInfo = "Ping returned no reply" } elseIf ($_.Exception.Message -like "*The RPC server is unavailable*") { # Set AdditionalInfo for PSObject #$AdditionalInfo = "Ping replies but RPC Server in unavailable" Write-Host "Checking reverse lookup" -ForegroundColor Green $PingTest = Test-Connection $Computer -Count 1 $IPAddress = $PingTest.IPV4Address.IPAddressToString Write-host "IP Address: $IPaddress" -ForegroundColor Cyan $Ping = &cmd.exe "/c ping -a $IPAddress -n 1" $PingParsed = $Ping[1] -split "Pinging " $PingParsed2 = $PingParsed -split ".$DomainSuffix" $ReverseLookup = $PingParsed2[1] Write-Host "Reverse Lookup: $ReverseLookup" -ForegroundColor Cyan If ($ReverseLookup -like "*bytes of data*") { $AdditionalInfo = "Reverse Lookup shows no Record" } elseif ($ReverseLookup -ne $Computer) { $AdditionalInfo = "Reverse Lookup shows $ReverseLookup" } Else { $AdditionalInfo = "Name Resolves. RPC Server is Unavailable" } } elseif ($_.Exception.Message -like "*Problem with some part of the filterspec*") { $AdditionalInfo = "Ping TTL expired in transit" } elseif ($_.Exception.Message -like "*Access is Denied*") { # Set AdditionalInfo for PSObject $AdditionalInfo = "Ping replies but Access is Denied" } else { # Set AdditionalInfo for PSObject $AdditionalInfo = $_.Exception.Message } }#End Catch If (!($NewUser)) { $NewUser = "None Found" } Return $NewUser, $Time, $CurrentlyLoggedOn, $AdditionalInfo }# End Function Get-LastLogon #------------------------------------------------ # Import the configuration manager module #------------------------------------------------ Function Import-CMModule { Write-Host "Importing configuration manager module" Try { Import-Module -Name "$(split-path $Env:SMS_ADMIN_UI_PATH)\ConfigurationManager.psd1" $global:Site = Get-PSDrive -PSProvider CMSite CD "$($Site):" Write-host "Site PSDrive now $Site" -ForegroundColor Green Set-Variable -Name Site -Value $Site.Name } Catch { Write-host "Cannot import the Configuration Manager module. $_" -ForegroundColor Green exit 1 } } #============================================================================================ # Start Script # Import CM Module Import-CMModule # Create Array $ADMachines = @() # Get days ago date $DaysAgo = [Datetime]::Today.AddDays(-$DaysOld) # Get AD Objects Write-host "Getting AD Computers" -ForegroundColor Green $ADMachines = Get-ADComputer -Filter {PasswordLastSet -le $DaysAgo} -Properties DistinguishedName, LastLogondate, lastLogonTimestamp, SID, OperatingSystem, Name, PasswordLastSet # Create array $ADMachinesColl = @() # Process AD machines $ADMachinesColl = Foreach ($ADMachine in $ADMachines) { Write-host "=================================" -ForegroundColor Green Write-host "Processing AD Information for : " $ADMachine.Name -ForegroundColor Green # Set Object Variables $OU = $ADMachine.DistinguishedName -split $ADMachine.Name | Select -Last 1 $OU = $OU.TrimStart(",") Write-host "OU: " $OU -ForegroundColor Green Write-host "Converting LastLogonTimeStamp: " $ADMachine.LastLogonTimeStamp $LastLogonTimeStamp = $ADMachine | Select-Object LastLogonTimeStamp,@{Name = "Stamp";Expression={[DateTime]::FromFileTime($_.LastLogonTimestamp)}} $LastMachineLogon = $LastLogonTimeStamp.Stamp Write-host "Converted Value: $LastMachineLogon" -ForegroundColor Green $OperatingSystem = $ADMachine.OperatingSystem Write-host "Operating System: $OperatingSystem" -ForegroundColor Green Write-host "Processing CM Information: " -ForegroundColor Green $ADMachineCMInfo = Get-CMDevice -Name $ADMachine.Name | Select Name, IsClient, IsObsolete, LastActiveTime If ($ADMachineCMInfo.Name) { $Client = $ADMachineCMInfo.IsClient $InSCCMTrueFalse = $true $LastSCCMActivity = $ADMachineCMInfo.LastActiveTime } else { Write-host "No CM Object found for: " $ADMachine.Name -ForegroundColor Green $Client = $false $InSCCMTrueFalse = $false $LastSCCMActivity = "N/A" } If (!($LastSCCMActivity)) { $LastSCCMActivity = "None found" } $Computer=$ADMachine.Name # Try to get Last Logged on user information $UserInfo = Get-LastLogon -ComputerName $ADMachine.Name -FilterSID $ADMachine.SID $NewUser = $UserInfo[0] $Time = $UserInfo[1] $CurrentlyLoggedOn = $UserInfo[2] $AdditionalInfo = $UserInfo[3] # For Debugging Write-Host "CM: Creating new object" -ForegroundColor Green Write-Host "--------------" -ForegroundColor Green Write-Host "Computer=$Computer" -ForegroundColor Green Write-Host "Client=$client" -ForegroundColor Green Write-Host "InSCCMTrueFalse=$InSCCMTrueFalse" -ForegroundColor Green Write-Host "LastSCCMActivity=$LastSCCMActivity" -ForegroundColor Green Write-Host "OU=$OU" -ForegroundColor Green Write-Host "LastMachineADLogon=$LastMachineLogon" -ForegroundColor Green Write-Host "User=$NewUser" -ForegroundColor Green Write-Host "Time=$Time" -ForegroundColor Green Write-Host "CurrentlyLoggedOn=$CurrentlyLoggedOn" -ForegroundColor Green Write-Host "OperatingSystem=$OperatingSystem" -ForegroundColor Green Write-Host "AdditionalInformation=$AdditionalInfo" -ForegroundColor Green Write-Host "--------------" -ForegroundColor Blue # Create PSObject New-Object -TypeName PSObject -Property @{ Computer=$Computer Client=$Client InSCCM=$InSCCMTrueFalse LastSCCMActivity = $LastSCCMActivity OU=$OU LastMachineADLogon=$LastMachineLogon User=$NewUser Time=$Time CurrentlyLoggedOn=$CurrentlyLoggedOn OperatingSystem = $OperatingSystem AdditionalInformation=$AdditionalInfo } | Select-Object Computer, InSCCM, Client, OU, LastSCCMActivity, LastMachineADLogon, User, Time, CurrentlyLoggedOn, OperatingSystem, AdditionalInformation } # Get CM Devices from Stale Collection Write-host "Getting CM Devices from non client collection" -ForegroundColor Green $CMMachines = @() $CMMachines = Get-CMDevice -CollectionId "$StaleCollectionID" # Create array $CMMachinesColl = @() # Process CM Objects $CMMAchinesColl = Foreach ($CMMachine in $CMMachines) { # Flush Variables $OU = "" $NewUser = "" $Time = "" # Set Object variables If (!($CMMachine.LastActiveTime)) { $LastSCCMActivity = "N/A" } If ($ADMachinesColl.Computer -notcontains $CMMachine.Name -and $CMMachine.DeviceOS -notlike "*Server*" -and $CMMachine.Name -notlike "*Unknown*") { Write-host "=================================" -ForegroundColor Green Write-host "CM-Processing AD Information for : " $CMMachine.Name -ForegroundColor Green Try { # Get AD info for CM Object $CMMachineADInfo = Get-ADComputer -Identity $CMMachine.Name -Properties DistinguishedName, LastLogondate, lastLogonTimestamp, SID, OperatingSystem, Name -ErrorAction Stop # Set Object variables $OU = $CMMachineADInfo.DistinguishedName -split $CMMachine.Name | Select -Last 1 $OU = $OU.TrimStart(",") Write-host "OU: " $OU -ForegroundColor Green Write-host "Converting LastLogonTimeStamp: " $CMMachineADInfo.LastLogonTimeStamp -ForegroundColor Green $LastLogonTimeStamp = $CMMachineADInfo | Select-Object LastLogonTimeStamp,@{Name = "Stamp";Expression={[DateTime]::FromFileTime($_.LastLogonTimestamp)}} $LastMachineLogon = $LastLogonTimeStamp.Stamp Write-host "Converted Value: $LastMachineLogon" -ForegroundColor Green $OperatingSystem = $CMMachineADInfo.OperatingSystem $Computer = $CMMachineADInfo.Name $Client = $CMMachine.IsClient $inSCCMTrueFalse = $true $LastSCCMActivity = $CMMachine.LastActiveTime if (!($LastSCCMActivity)) { $LastSCCMActivity = "None found" } $UserInfo = Get-LastLogon -ComputerName $CMMachineADInfo.Name -FilterSID $CMMachineADInfo.SID $NewUser = $UserInfo[0] $Time = $UserInfo[1] $CurrentlyLoggedOn = $UserInfo[2] $AdditionalInfo = $UserInfo[3] } Catch { write-host "CM: Unable to locate an AD object for :" $CMMachine.Name -ForegroundColor Green Write-host $_.Exception.Message -ForegroundColor Cyan # Set Object variables $OU = "N/A" $LastMachineLogon = "N/A" $NewUser = "N/A" $Time = "N/A" $CurrentlyLoggedOn = "N/A" If ($_.Exception.Message -like "*Cannot find an object with identity*") { $AdditionalInfo = "NO AD OBJECT FOUND" } else { $AdditionalInfo = $_.Exception.Message } } # End Catch # Set Object variables $Client = $CMMachine.IsClient $inSCCMTrueFalse = $true $LastSCCMActivity = $CMMachine.LastActiveTime if (!($LastSCCMActivity)) { $LastSCCMActivity = "None found" } $Computer = $CMMachine.Name $OperatingSystem = $CMMachineADInfo.OperatingSystem # User CM OS if it cannot be found in AD If ($CMMachineADInfo.OperatingSystem -eq $null) { $OperatingSystem = $CMMachine.DeviceOS } # For Debugging Write-Host "CM: Creating new object" -ForegroundColor Green Write-Host "--------------" -ForegroundColor Green Write-Host "Computer=$Computer" -ForegroundColor Green Write-Host "Client=$client" -ForegroundColor Green Write-Host "InSCCMTrueFalse=$InSCCMTrueFalse" -ForegroundColor Green Write-Host "LastSCCMActivity=$LastSCCMActivity" -ForegroundColor Green Write-Host "OU=$OU" -ForegroundColor Green Write-Host "LastMachineADLogon=$LastMachineLogon" -ForegroundColor Green Write-Host "User=$NewUser" -ForegroundColor Green Write-Host "Time=$Time" -ForegroundColor Green Write-Host "CurrentlyLoggedOn=$CurrentlyLoggedOn" -ForegroundColor Green Write-Host "OperatingSystem=$OperatingSystem" -ForegroundColor Green Write-Host "AdditionalInformation=$AdditionalInfo" -ForegroundColor Green Write-Host "--------------" -ForegroundColor Blue # Create PS Object New-Object -TypeName PSObject -Property @{ Computer=$Computer Client=$Client InSCCM=$InSCCMTrueFalse LastSCCMActivity=$LastSCCMActivity OU=$OU LastMachineADLogon=$LastMachineLogon User=$NewUser Time=$Time CurrentlyLoggedOn=$CurrentlyLoggedOn OperatingSystem=$OperatingSystem AdditionalInformation=$AdditionalInfo }| Select-Object Computer, InSCCM, Client, OU, LastSCCMActivity, LastMachineADLogon, User, Time, CurrentlyLoggedOn, OperatingSystem, AdditionalInformation } } # Add all the data together $Collection = @() $Collection = $ADMachinesColl $Collection += $CMMachinesColl # Separate into two arrays by Last AD login of specified days $StaleUnManaged = @() $FreshUnManaged = @() foreach ($item in $Collection) { If ($item.LastMachineADLogon -lt $DaysAgo) { $StaleUnManaged += $item } else { $FreshUnManaged += $item } } # Count $StaleCount = $StaleUnManaged.Count $FreshCount = $FreshUnManaged.Count # Sort $StaleUnmanagedSorted = $StaleUnManaged.GetEnumerator() | sort -Property LastMachineADLogon $FreshUnmanagedSorted = $FreshUnManaged.GetEnumerator() | sort -Property LastMachineADLogon # Export to CSV for attachment $StaleUnmanagedSorted | Export-Csv -NoTypeInformation -Path "$ENV:TEMP\StaleUnmanaged.csv" -Force $FreshUnmanagedSorted | Export-Csv -NoTypeInformation -Path "$ENV:TEMP\RecentUnmanaged.csv" -Force # Define Styles and Header $Header = @" <style> BODY { padding-left: 40px; font-family: 'Segoe UI', Frutiger, 'Frutiger Linotype', 'Dejavu Sans', 'Helvetica Neue', Arial, sans-serif; font-style: normal; font-variant: normal; line-height: normal; white-space: nowrap; } TABLE { border-width: 1px; border-style: solid; border-color: black; border-collapse: collapse; width: 100%; } TH { border-width: 1px; padding: 0px; border-style: solid; border-color: black; background-color:green; color:white; padding: 5px; font-weight: bold; text-align:left; font-size: 16px; } TD { border-width: 1px; padding: 0px; border-style: solid; border-color: black; background-color:#FEFEFE; padding: 2px; font-size: 12px; } UL { list-style-type: none; list-style-position: inside; padding-left: 0px; margin: 0px; } LI { padding-left: 40px; padding-right: 40px; } h1 { font-size: 32px; font-weight: 500; } h2 { font-size: 23px; font-weight: 500; } h3 { font-size: 17px; font-weight: 500; } h4 { font-size: 14px; font-weight: 500; } p { font-size: 10px; font-weight: 400; } blockquote { font-size: 17px; font-weight: 400; } pre { font-size: 10px; font-weight: 400; } </style> "@ # Convert object into string for HTML email [string]$UnManagedHTML = '' $UnManagedHTML += "<h2> Unmanaged Devices Report.</H2><br><h3> <strong>STALE:</strong> Computers that have not signed into AD in $Daysold days or more <strong>(Count: $StaleCount)</strong></H3>" $UnManagedHTML += $StaleUnmanagedSorted | ConvertTo-Html -Fragment $UnManagedHTML += "<h3> <strong>RECENT:</strong> Computers that have logged into AD in last $Daysold days <strong>(Count: $FreshCount)</strong></H3>" $UnManagedHTML += $FreshUnmanagedSorted | ConvertTo-Html -Fragment # Create email Body $HTMLBody = ConvertTo-Html -Head $Header -Body $UnManagedHTML | Out-String # Email report with attachements Send-MailMessage -SmtpServer "$SMTPServer" -To "$SMTPTo" -From "$SMTPFrom" -Subject "All UnManaged Machine Report" -BodyAsHtml -Body $HTMLBody -Attachments "$ENV:TEMP\StaleUnmanaged.csv", "$ENV:TEMP\RecentUnmanaged.csv"

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<# .SYNOPSIS Emails report of unmanaged devices with CSV attachments.   .DESCRIPTION Pulls all devices from AD that have not changed their password in X days. Pulls all SCCM unmanaged devices. Combines this data and checks for last logon user, then pulls the following information into a report: Computer | InSCCM | Client | OU | Last SCCM Activity | Last AD Logon | User | Time | Currently Logged in | Operating System | Additional Info   .REQUIREMENTS Designed to run from the SCCM Server Account running must have permissions to read CM Objects Account running must have permissions to read AD Computer objects and atrributes   .PARAMETER Daysold Mandatory string parameter; The number of days since machines in AD have changed their password (Default AD policy is every 30 days.  Recommend this parameter be 90 days).   .PARAMETER DomainSuffix Mandatory string parameter; Your internal domain suffix. (Example: contoso.com)   .PARAMETER StaleCollectionID Mandatory string parameter; The ID of a collection you create that holds devices that have no client - Collection Query to use: select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,                            SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,                            SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.Client != "1"                            or SMS_R_System.Client is null and SMS_R_System.OperatingSystemNameandVersion like "%NT%"   .PARAMETER SMTPServer Mandatory string parameter; The FQDN of your SMTP server   .PARAMETER SMTPTo Mandatory string parameter; The email address or DL you want to sent the report to   .PARAMETER $SMTPFrom Mandatory string parameter; The email address you want to send the report from     .EXAMPLE (Office 365 Exchange Online) .\Get-UnmanagedDevices-Report.ps1 -DaysOld 90 -DomainSuffix contoso.com -StaleCollectionID P0120304 -SMTPServer contoso-com01c.mail.protection.outlook.com -SMTPTo DL-Notifications@contoso.com -SMTPFrom Automation@contoso.com   .EXAMPLE (On premises Exchange) .\Get-UnmanagedDevices-Report.ps1 -DaysOld 90 -DomainSuffix contoso.com -StaleCollectionID P0120304 -SMTPServer smtp.contoso.com -SMTPTo DL-Notifications@contoso.com -SMTPFrom Automation@contoso.com     .NOTES This script is written to email using SMTP without a named account.  You will need to adjust if you need to send from a mailbox. Written by William Bracken (Borrowed parts of other scripts of course) Model Technology Solutions   .VERSION Version 1.0 - 01/18/2017 Script creation Version 1.1 - 01/25/2017 Added parameters   .LINK http://model-technology.com   #>   [CmdletBinding()] param (     [Parameter(Mandatory=$True)]     [string]$DaysOld,       [Parameter(Mandatory=$True)]     [string]$DomainSuffix,       [Parameter(Mandatory=$True)]     [string]$StaleCollectionID,       [Parameter(Mandatory=$True)]     [string]$SMTPServer,       [Parameter(Mandatory=$True)]     [string]$SMTPFrom,       [Parameter(Mandatory=$True)]     [string]$SMTPTo )   #------------------------------------------------ # Get Last Logon user data #------------------------------------------------ Function Get-LastLogon {       [CmdletBinding()]     param(      [Parameter()]      [String]$ComputerName,      [String]$FilterSID,      [String]$WQLFilter="NOT SID = 'S-1-5-18' AND NOT SID = 'S-1-5-19' AND NOT SID = 'S-1-5-20'"      )           # Adjusting ErrorActionPreference to stop on all errors         $TempErrAct = $ErrorActionPreference     $ErrorActionPreference = "Stop"           $NewUser = ''         $Time = ''         $CurrentlyLoggedOn = ''         $AdditionalInfo = ''           If ($FilterSID)         {          $WQLFilter = $WQLFilter + " AND NOT SID = `'$FilterSID`'" }         Try         {                          Test-Connection $Computer -Count 1 | Out-Null             $Win32User = Get-WmiObject -Class Win32_UserProfile -Filter $WQLFilter -ComputerName $Computer $LastUser = $Win32User | Sort-Object -Property LastUseTime -Descending | Select-Object -First 4               Foreach ($sid in $LastUser)               {     $Loaded = $sid.Loaded                 If (!($sid.LastuseTime -eq $null))                 {                     $Script:Time = ([WMI]'').ConvertToDateTime($sid.LastUseTime)              #Convert SID to Account for friendly display     $Script:UserSID = New-Object System.Security.Principal.SecurityIdentifier($sid.SID)                     Try                     {          $User = $Script:UserSID.Translate([System.Security.Principal.NTAccount])                           # =================================                         # Disregard service accounts (accounts that have S_ in the name.  Adjust for your organization)                         If ($user -notlike "*s_*")                         {                             $NewUser = $User                         }                     }                     Catch                     {                         $_.Exception.Message                     }                 }                 Else                 {                                                  }             }                                    # If NewUser is empty set for report             If (!($NewUser))             {                 $NewUser = "None Found"             }             $Time = $Script:Time             $CurrentlyLoggedOn = $Loaded             $AdditionalInfo = "N/A"                  }#End Try         Catch     {          # Set Variables for PSObject For Output             $Time = "N/A"             $CurrentlyLoggedOn = "N/A"               If ($_.Exception.Message -Like "*Some or all identity references could not be translated*") {          Write-Warning "Unable to Translate $Script:UserSID, try filtering the SID `nby using the -FilterSID parameter."      Write-Warning "It may be that $Script:UserSID is local to $Computer, Unable to translate remote SID" }             elseif ($_.Exception.Message -like "*No such host is known*")             {                 # Set AdditionalInfo for PSObject                 $AdditionalInfo = "Ping returned Invalid Hostname"             }             elseif ($_.Exception.Message -like "*Error due to lack of resources*")             {                 $AdditionalInfo = "Ping returned no reply"             }             elseif ($_.Exception.Message -like "*A non-recoverable error occurred*")             {                 $AdditionalInfo = "Ping returned no reply"             }             elseIf ($_.Exception.Message -like "*The RPC server is unavailable*")             {                 # Set AdditionalInfo for PSObject                 #$AdditionalInfo = "Ping replies but RPC Server in unavailable"                 Write-Host "Checking reverse lookup" -ForegroundColor Green                 $PingTest = Test-Connection $Computer -Count 1                 $IPAddress = $PingTest.IPV4Address.IPAddressToString                 Write-host "IP Address: $IPaddress" -ForegroundColor Cyan                 $Ping = &cmd.exe "/c ping -a $IPAddress -n 1"                 $PingParsed = $Ping[1] -split "Pinging "                 $PingParsed2 = $PingParsed -split ".$DomainSuffix"                 $ReverseLookup = $PingParsed2[1]                 Write-Host "Reverse Lookup: $ReverseLookup" -ForegroundColor Cyan                 If ($ReverseLookup -like "*bytes of data*")                 {                     $AdditionalInfo = "Reverse Lookup shows no Record"                 }                 elseif ($ReverseLookup -ne $Computer)                 {                     $AdditionalInfo = "Reverse Lookup shows $ReverseLookup"                 }                 Else                 {                     $AdditionalInfo = "Name Resolves. RPC Server is Unavailable"                 }             }             elseif ($_.Exception.Message -like "*Problem with some part of the filterspec*")             {                 $AdditionalInfo = "Ping TTL expired in transit"             }             elseif ($_.Exception.Message -like "*Access is Denied*")             {                 # Set AdditionalInfo for PSObject                 $AdditionalInfo = "Ping replies but Access is Denied"             }             else             {                 # Set AdditionalInfo for PSObject                 $AdditionalInfo = $_.Exception.Message             } }#End Catch         If (!($NewUser))         {                 $NewUser = "None Found"         }         Return $NewUser, $Time, $CurrentlyLoggedOn, $AdditionalInfo }# End Function Get-LastLogon   #------------------------------------------------ # Import the configuration manager module #------------------------------------------------ Function Import-CMModule { Write-Host "Importing configuration manager module" Try {         Import-Module -Name "$(split-path $Env:SMS_ADMIN_UI_PATH)\ConfigurationManager.psd1"         $global:Site = Get-PSDrive -PSProvider CMSite         CD "$($Site):"         Write-host "Site PSDrive now $Site" -ForegroundColor Green         Set-Variable -Name Site -Value $Site.Name     }     Catch     {         Write-host "Cannot import the Configuration Manager module. $_" -ForegroundColor Green         exit 1     } }   #============================================================================================ # Start Script   # Import CM Module Import-CMModule   # Create Array $ADMachines = @() # Get days ago date $DaysAgo = [Datetime]::Today.AddDays(-$DaysOld)   # Get AD Objects Write-host "Getting AD Computers" -ForegroundColor Green $ADMachines = Get-ADComputer -Filter {PasswordLastSet -le $DaysAgo} -Properties DistinguishedName, LastLogondate, lastLogonTimestamp, SID, OperatingSystem, Name, PasswordLastSet   # Create array $ADMachinesColl = @()   # Process AD machines $ADMachinesColl = Foreach ($ADMachine in $ADMachines) {     Write-host "=================================" -ForegroundColor Green     Write-host "Processing AD Information for : " $ADMachine.Name -ForegroundColor Green          # Set Object Variables     $OU = $ADMachine.DistinguishedName -split $ADMachine.Name | Select -Last 1     $OU = $OU.TrimStart(",")     Write-host "OU: " $OU -ForegroundColor Green       Write-host "Converting LastLogonTimeStamp: " $ADMachine.LastLogonTimeStamp     $LastLogonTimeStamp = $ADMachine | Select-Object LastLogonTimeStamp,@{Name = "Stamp";Expression={[DateTime]::FromFileTime($_.LastLogonTimestamp)}}     $LastMachineLogon = $LastLogonTimeStamp.Stamp     Write-host "Converted Value: $LastMachineLogon" -ForegroundColor Green       $OperatingSystem = $ADMachine.OperatingSystem     Write-host "Operating System: $OperatingSystem" -ForegroundColor Green        Write-host "Processing CM Information: " -ForegroundColor Green     $ADMachineCMInfo = Get-CMDevice -Name $ADMachine.Name | Select Name, IsClient, IsObsolete, LastActiveTime     If ($ADMachineCMInfo.Name)     {         $Client = $ADMachineCMInfo.IsClient         $InSCCMTrueFalse = $true         $LastSCCMActivity = $ADMachineCMInfo.LastActiveTime     }     else     {         Write-host "No CM Object found for: " $ADMachine.Name -ForegroundColor Green         $Client = $false         $InSCCMTrueFalse = $false         $LastSCCMActivity = "N/A"     }     If (!($LastSCCMActivity))     {         $LastSCCMActivity = "None found"     }     $Computer=$ADMachine.Name       # Try to get Last Logged on user information     $UserInfo = Get-LastLogon -ComputerName $ADMachine.Name -FilterSID $ADMachine.SID     $NewUser = $UserInfo[0]     $Time = $UserInfo[1]     $CurrentlyLoggedOn = $UserInfo[2]     $AdditionalInfo = $UserInfo[3]       # For Debugging     Write-Host "CM: Creating new object" -ForegroundColor Green     Write-Host "--------------" -ForegroundColor Green     Write-Host "Computer=$Computer" -ForegroundColor Green     Write-Host "Client=$client" -ForegroundColor Green     Write-Host "InSCCMTrueFalse=$InSCCMTrueFalse" -ForegroundColor Green     Write-Host "LastSCCMActivity=$LastSCCMActivity" -ForegroundColor Green     Write-Host "OU=$OU" -ForegroundColor Green     Write-Host "LastMachineADLogon=$LastMachineLogon" -ForegroundColor Green     Write-Host "User=$NewUser" -ForegroundColor Green     Write-Host "Time=$Time" -ForegroundColor Green     Write-Host "CurrentlyLoggedOn=$CurrentlyLoggedOn" -ForegroundColor Green     Write-Host "OperatingSystem=$OperatingSystem" -ForegroundColor Green     Write-Host "AdditionalInformation=$AdditionalInfo" -ForegroundColor Green     Write-Host "--------------" -ForegroundColor Blue       # Create PSObject     New-Object -TypeName PSObject -Property @{     Computer=$Computer     Client=$Client     InSCCM=$InSCCMTrueFalse     LastSCCMActivity = $LastSCCMActivity     OU=$OU     LastMachineADLogon=$LastMachineLogon User=$NewUser Time=$Time CurrentlyLoggedOn=$CurrentlyLoggedOn     OperatingSystem = $OperatingSystem     AdditionalInformation=$AdditionalInfo     } | Select-Object Computer, InSCCM, Client, OU, LastSCCMActivity, LastMachineADLogon, User, Time, CurrentlyLoggedOn, OperatingSystem, AdditionalInformation }   # Get CM Devices from Stale Collection Write-host "Getting CM Devices from non client collection" -ForegroundColor Green $CMMachines = @() $CMMachines = Get-CMDevice -CollectionId "$StaleCollectionID"   # Create array $CMMachinesColl = @()   # Process CM Objects $CMMAchinesColl = Foreach ($CMMachine in $CMMachines) {     # Flush Variables     $OU = ""     $NewUser = ""     $Time = ""       # Set Object variables     If (!($CMMachine.LastActiveTime))     {         $LastSCCMActivity = "N/A"     }       If ($ADMachinesColl.Computer -notcontains $CMMachine.Name -and $CMMachine.DeviceOS -notlike "*Server*" -and $CMMachine.Name -notlike "*Unknown*")     {         Write-host "=================================" -ForegroundColor Green         Write-host "CM-Processing AD Information for : " $CMMachine.Name -ForegroundColor Green         Try         {             # Get AD info for CM Object             $CMMachineADInfo = Get-ADComputer -Identity $CMMachine.Name -Properties DistinguishedName, LastLogondate, lastLogonTimestamp, SID, OperatingSystem, Name -ErrorAction Stop                          # Set Object variables             $OU = $CMMachineADInfo.DistinguishedName -split $CMMachine.Name | Select -Last 1             $OU = $OU.TrimStart(",")             Write-host "OU: " $OU -ForegroundColor Green               Write-host "Converting LastLogonTimeStamp: " $CMMachineADInfo.LastLogonTimeStamp -ForegroundColor Green             $LastLogonTimeStamp = $CMMachineADInfo | Select-Object LastLogonTimeStamp,@{Name = "Stamp";Expression={[DateTime]::FromFileTime($_.LastLogonTimestamp)}}             $LastMachineLogon = $LastLogonTimeStamp.Stamp             Write-host "Converted Value: $LastMachineLogon" -ForegroundColor Green               $OperatingSystem = $CMMachineADInfo.OperatingSystem             $Computer = $CMMachineADInfo.Name             $Client = $CMMachine.IsClient             $inSCCMTrueFalse = $true             $LastSCCMActivity = $CMMachine.LastActiveTime             if (!($LastSCCMActivity))             {                 $LastSCCMActivity = "None found"             }             $UserInfo = Get-LastLogon -ComputerName $CMMachineADInfo.Name -FilterSID $CMMachineADInfo.SID             $NewUser = $UserInfo[0]             $Time = $UserInfo[1]             $CurrentlyLoggedOn = $UserInfo[2]             $AdditionalInfo = $UserInfo[3]                      }         Catch         {             write-host "CM: Unable to locate an AD object for :" $CMMachine.Name -ForegroundColor Green             Write-host $_.Exception.Message -ForegroundColor Cyan               # Set Object variables             $OU = "N/A"             $LastMachineLogon = "N/A"             $NewUser = "N/A"             $Time = "N/A"             $CurrentlyLoggedOn = "N/A"               If ($_.Exception.Message -like "*Cannot find an object with identity*")             {                 $AdditionalInfo = "NO AD OBJECT FOUND"             }             else             {                 $AdditionalInfo = $_.Exception.Message             }         } # End Catch           # Set Object variables         $Client = $CMMachine.IsClient         $inSCCMTrueFalse = $true         $LastSCCMActivity = $CMMachine.LastActiveTime         if (!($LastSCCMActivity))         {             $LastSCCMActivity = "None found"         }         $Computer = $CMMachine.Name         $OperatingSystem = $CMMachineADInfo.OperatingSystem           # User CM OS if it cannot be found in AD         If ($CMMachineADInfo.OperatingSystem -eq $null)         {             $OperatingSystem = $CMMachine.DeviceOS         }           # For Debugging         Write-Host "CM: Creating new object" -ForegroundColor Green         Write-Host "--------------" -ForegroundColor Green         Write-Host "Computer=$Computer" -ForegroundColor Green         Write-Host "Client=$client" -ForegroundColor Green         Write-Host "InSCCMTrueFalse=$InSCCMTrueFalse" -ForegroundColor Green         Write-Host "LastSCCMActivity=$LastSCCMActivity" -ForegroundColor Green         Write-Host "OU=$OU" -ForegroundColor Green         Write-Host "LastMachineADLogon=$LastMachineLogon" -ForegroundColor Green         Write-Host "User=$NewUser" -ForegroundColor Green         Write-Host "Time=$Time" -ForegroundColor Green         Write-Host "CurrentlyLoggedOn=$CurrentlyLoggedOn" -ForegroundColor Green         Write-Host "OperatingSystem=$OperatingSystem" -ForegroundColor Green         Write-Host "AdditionalInformation=$AdditionalInfo" -ForegroundColor Green         Write-Host "--------------" -ForegroundColor Blue           # Create PS Object         New-Object -TypeName PSObject -Property @{         Computer=$Computer         Client=$Client         InSCCM=$InSCCMTrueFalse         LastSCCMActivity=$LastSCCMActivity         OU=$OU         LastMachineADLogon=$LastMachineLogon      User=$NewUser      Time=$Time      CurrentlyLoggedOn=$CurrentlyLoggedOn         OperatingSystem=$OperatingSystem         AdditionalInformation=$AdditionalInfo         }| Select-Object Computer, InSCCM, Client, OU, LastSCCMActivity, LastMachineADLogon, User, Time, CurrentlyLoggedOn, OperatingSystem, AdditionalInformation     } }   # Add all the data together $Collection = @() $Collection = $ADMachinesColl $Collection += $CMMachinesColl   # Separate into two arrays by Last AD login of specified days $StaleUnManaged = @() $FreshUnManaged = @() foreach ($item in $Collection) {     If ($item.LastMachineADLogon -lt $DaysAgo)     {         $StaleUnManaged += $item     }     else     {         $FreshUnManaged += $item     } }   # Count $StaleCount = $StaleUnManaged.Count $FreshCount = $FreshUnManaged.Count   # Sort $StaleUnmanagedSorted = $StaleUnManaged.GetEnumerator() | sort -Property LastMachineADLogon $FreshUnmanagedSorted = $FreshUnManaged.GetEnumerator() | sort -Property LastMachineADLogon   # Export to CSV for attachment $StaleUnmanagedSorted | Export-Csv -NoTypeInformation -Path "$ENV:TEMP\StaleUnmanaged.csv" -Force $FreshUnmanagedSorted | Export-Csv -NoTypeInformation -Path "$ENV:TEMP\RecentUnmanaged.csv" -Force   # Define Styles and Header $Header =  @" "@     # Convert object into string for HTML email [string]$UnManagedHTML = '' $UnManagedHTML += " Unmanaged Devices Report. STALE: Computers that have not signed into AD in $Daysold days or more (Count: $StaleCount) " $UnManagedHTML += $StaleUnmanagedSorted | ConvertTo-Html -Fragment $UnManagedHTML += " RECENT: Computers that have logged into AD in last $Daysold days (Count: $FreshCount) " $UnManagedHTML += $FreshUnmanagedSorted | ConvertTo-Html -Fragment   # Create email Body $HTMLBody = ConvertTo-Html -Head $Header -Body $UnManagedHTML | Out-String   # Email report with attachements Send-MailMessage -SmtpServer "$SMTPServer" -To "$SMTPTo" -From "$SMTPFrom" -Subject "All UnManaged Machine Report" -BodyAsHtml -Body $HTMLBody -Attachments "$ENV:TEMP\StaleUnmanaged.csv", "$ENV:TEMP\RecentUnmanaged.csv"