Trick to force an update to the LastLogon Timestamp for an Active Directory account. This is sometimes necessary for the portal cache accounts if a companies AD team disables accounts based on the LastLogon timestamp of a user.

Update-LastLogonTimestamp.ps1

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue


function Update-LastLogonTimestamp
{
    [CmdletBinding()]
    param
    (
        [parameter(Position=0, Mandatory=$true)][string]$UserName
    )
    
    begin
    {
        $upn = $UserName
        $impersonationSuccessful = $true
    }
    process
    {
        if ($UserName.IndexOf("\") -gt 0)
        {
            # convert to user@domain format
            $domain = $UserName.Split("\")[0]
            $user   = $UserName.Split("\")[1]
            $upn    = "$user@$domain"
        }    

        try
        {
            $windowsIdentity = New-Object System.Security.Principal.WindowsIdentity($upn)
            $impersonatedContext = $windowsIdentity.Impersonate()
        }
        catch
        {
            $impersonationSuccessful = $false
        }
        finally
        {
            if($impersonatedContext)
            {
                $impersonatedContext.Undo()
            }
        }
    }
    end
    {
        $impersonationSuccessful
    }
}

# update non-managed accounts
# Update-LastLogonTimestamp -UserName "portalsuperreader@contoso.com"
# Update-LastLogonTimestamp -UserName "portalsuperuser@contoso.com"

# update all managed accounts
Get-SPManagedAccount | % { Update-LastLogonTimestamp -UserName $_.UserName }

@OldNGrumpy, thank you, fixed.

@caricas91, see comments above. It should be fixed now.

@joerodgers Are there any pre-reqs for this to work? I am getting the following error on the $windowsIdentity = New-Object System.Security.Principal.WindowsIdentity($upn) call:

New-Object : Exception calling ".ctor" with "1" argument(s): "A specified logon session does not exist. It may already
have been terminated.
"
At line:1 char:21

• ... sIdentity = New-Object System.Security.Principal.WindowsIdentity(" ...

•             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

  • CategoryInfo : InvalidOperation: (:) [New-Object], MethodInvocationException
  • FullyQualifiedErrorId : ConstructorInvokedThrowException,Microsoft.PowerShell.Commands.NewObjectCommand