Public/Disable-ADSIUser.ps1

function Disable-ADSIUser
{
<#
    .SYNOPSIS
        Function to Disable a User Account
     
    .DESCRIPTION
        Function to Disable a User Account
     
    .PARAMETER Identity
        Specifies the Identity of the User.
     
        You can provide one of the following properties
            DistinguishedName
            Guid
            Name
            SamAccountName
            Sid
            UserPrincipalName
         
        Those properties come from the following enumeration:
            System.DirectoryServices.AccountManagement.IdentityType
     
    .PARAMETER Credential
        Specifies the alternative credential to use.
        By default it will use the current user windows credentials.
     
    .PARAMETER DomainName
        Specifies the alternative Domain.
        By default it will use the current domain.
     
    .EXAMPLE
        Disable-ADSIUser fxtest02
     
        This will disable the fxtest02 account
     
    .EXAMPLE
        Disable-ADSIUser fxtest02 -whatif
     
        This will emulate disabling the fxtest02 account
     
    .EXAMPLE
        Disable-ADSIUser fxtest02 -credential (Get-Credential)
     
        This will disable the fxtest02 account using the credential specified
     
    .EXAMPLE
        Disable-ADSIUser fxtest02 -credential (Get-Credential) -DomainName LazyWinAdmin.local
     
        This will disable the fxtest02 account using the credential specified in the domain LazyWinAdmin.local
     
    .NOTES
        Francois-Xavier.Cat
        LazyWinAdmin.com
        @lazywinadm
        github.com/lazywinadmin
    .LINK
        https://msdn.microsoft.com/en-us/library/System.DirectoryServices.AccountManagement.UserPrincipal(v=vs.110).aspx
#>

    [CmdletBinding(SupportsShouldProcess = $true)]
    PARAM (
        [parameter(Mandatory = $true, ValueFromPipelineByPropertyName = $true, ValueFromPipeline = $true)]
        $Identity,
        [Alias("RunAs")]
        [System.Management.Automation.PSCredential]
        [System.Management.Automation.Credential()]
        $Credential = [System.Management.Automation.PSCredential]::Empty,
        [String]$DomainName)
    
    BEGIN
    {
        Add-Type -AssemblyName System.DirectoryServices.AccountManagement
        
        # Create Context splatting
        $ContextSplatting = @{ }
        IF ($PSBoundParameters['Credential']) { $ContextSplatting.Credential = $Credential }
        IF ($PSBoundParameters['DomainName']) { $ContextSplatting.DomainName = $DomainName }
        
        $Context = New-ADSIPrincipalContext @ContextSplatting -contexttype Domain
    }
    PROCESS
    {
        TRY
        {
            if ($pscmdlet.ShouldProcess("$Identity", "Disable Account"))
            {
                $Account = Get-ADSIUser -Identity $Identity @ContextSplatting
                $Account.Enabled=$false
                $Account.Save()
            }
        }
        CATCH
        {
            Write-Error $Error[0]
        }
    }
}