Invoke-Logoff

Invoke-Logoff

Logoff a target User

By Michael J. Thomas

04/24/2024
 
I decided to pull one of my older scripts off the back burner and share it with the world. This script has been handy for me with persistent account lockouts. The user has their password changed but has logged into multiple machines and the older password is locking the machine out. This script allows you to just target that computer and user and log them out. 

<#

.Synopsis

   Logoff User off a Remote Computer. 

.DESCRIPTION

   Invoke-Logoff v1.0 Used to Logoff a User from a Remote Computer.

   This also tests if a computer is online and if WinRM is enabled.

    

   Created by Michael J. Thomas 9/11/2018.

   Updated 12/27/2018 


.EXAMPLE

   Invoke-Logoff -ComputerName "computer01" -UserName "user01"

#>


Function Invoke-Logoff

{

[cmdletbinding()]

param (

                [String]$ComputerName,

[String]$UserName

#[Parameter(Mandatory = $true)]

)

Function Get-QUser

{

[cmdletbinding()]

param (

[String]$ComputerName = $env:COMPUTERNAME

)

If ($ComputerName -eq $env:COMPUTERNAME)

{

$Out = quser.exe

}

Else

{

$Out = Invoke-Command -ComputerName $ComputerName -ScriptBlock { quser.exe }

If (!$Out) { Throw "Unable to retrieve quser info for `"$ComputerName`"" }

}

ForEach ($ln in $Out)

{

[PSCustomObject]@{

Username = $ln.SubString(1, 20).Trim()

SessionName = $ln.SubString(23, 17).Trim()

ID      = $ln.SubString(42, 2).Trim()

}

}

}

If (Test-Connection -Computername $ComputerName -BufferSize 16 -Count 1 -Quiet)

{

Write-Host "$ComputerName is OnLine" -ForegroundColor Green

If (Test-WSMan -ComputerName $ComputerName -ErrorAction SilentlyContinue)

{

Write-Host "WinRM Configured" -ForegroundColor Green

Try

{

$FindUser = (Get-QUser -ComputerName $ComputerName) | Where-Object { $_.Username -like "*$UserName*" }

If ($FindUser.Username -eq $UserName)

{

Write-Host "$UserName is Logged Into the $ComputerName" -ForegroundColor Green

Start-Sleep 2

$ID = $FindUser.ID

        Write-Host $(Invoke-Command -ComputerName $ComputerName -ScriptBlock { Logoff $Using:ID /v }) -ForegroundColor Green

}

Else

{

Write-Host "$UserName is Not Logged Into the $ComputerName" -ForegroundColor Yellow

Get-QUser -ComputerName $ComputerName

}

}

Catch

{

Write-Host = "$UserName Does Not Exist on $ComputerName"

Get-QUser -ComputerName $ComputerName

}

}

Else

{

#WinRM is not Configured

Write-Host "WinRM Not Configured" -ForegroundColor Yellow 

}

}

Else

{

Write-Host "$ComputerName is Offline" -ForegroundColor Yellow

    }

 }

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