Usually when querying the logon history of a Windows system you might query the Security event log or a domain controller. But if you’re using SCCM, the SCCM client also logs user logon events and stores them in WMI. Here’s a quick PowerShell script to retrieve those events and translate them into meaningful values.
You can run it against the local or a remote computer and optionally specify the maximum number of events to retrieve.
Note that for remote computers the date/time values will be displayed in your local time zone, not necessarily the timezone of the remote system.
Get-CMUserLogonEvents | Sort LogonTime -Descending | Out-GridView
Function Get-CMUserLogonEvents {
[CmdletBinding ()]
Param
(
[Parameter (Mandatory = $false , ValueFromPipelineByPropertyName = $true )]
$ComputerName ,
[Parameter (Mandatory = $false , ValueFromPipelineByPropertyName = $true )]
$MaximumEvents = 50
)
If ($ComputerName )
{
[array ]$LastLogons = Get-WmiObject – ComputerName $ComputerName – Namespace ROOT\CCM – Class CCM_UserLogonEvents | Select – last $MaximumEvents
}
Else
{
[array ]$LastLogons = Get-WmiObject – Namespace ROOT\CCM – Class CCM_UserLogonEvents | Select – last $MaximumEvents
}
Foreach ($Logon in $LastLogons )
{
If ($Logon.LogoffTime -ne $null )
{
[pscustomobject ]@ {
LogonTime = [System.TimeZoneInfo ]::ConvertTimeFromUtc(([datetime ]::new(1970 , 01 , 01 , 00 , 00 , 00 , [System.DateTimeKind ]::Utc)).AddSeconds($Logon.LogonTime ), [System.TimeZoneInfo ]::Local)
LogoffTime = [System.TimeZoneInfo ]::ConvertTimeFromUtc(([datetime ]::new(1970 , 01 , 01 , 00 , 00 , 00 , [System.DateTimeKind ]::Utc)).AddSeconds($Logon.LogoffTime ), [System.TimeZoneInfo ]::Local)
User = [System.Security.Principal.SecurityIdentifier ]::new($Logon.UserSID ).Translate([System.Security.Principal.NTAccount ]).Value
DurationInHours = [math ]::Round([System.TimeSpan ]::FromSeconds(($Logon.LogoffTime – $Logon.LogonTime )).TotalHours, 2 )
}
}
Else
{
[pscustomobject ]@ {
LogonTime = [System.TimeZoneInfo ]::ConvertTimeFromUtc(([datetime ]::new(1970 , 01 , 01 , 00 , 00 , 00 , [System.DateTimeKind ]::Utc)).AddSeconds($Logon.LogonTime ), [System.TimeZoneInfo ]::Local)
LogoffTime = $null
User = [System.Security.Principal.SecurityIdentifier ]::new($Logon.UserSID ).Translate([System.Security.Principal.NTAccount ]).Value
DurationInHours = [math ]::Round(((Get-Date ) – ([System.TimeZoneInfo ]::ConvertTimeFromUtc(([datetime ]::new(1970 , 01 , 01 , 00 , 00 , 00 , [System.DateTimeKind ]::Utc)).AddSeconds($Logon.LogonTime ), [System.TimeZoneInfo ]::Local))).TotalHours, 2 )
}
}
}
}
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This is exactly what I was looking for. Do you mind if I add this script to my device scanner project (https://github.com/MikePohatu/DevChecker)?
Glad it helped…be my guest 🙂