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asmwarrior/reset-terminal-services.ps1

Forked from heywoodlh/reset-terminal-services.ps1
Created August 20, 2024 03:01
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  1. Spencer Heywood created this gist Sep 1, 2017.
    76 changes: 76 additions & 0 deletions reset-terminal-services.ps1
    View file
    Original file line number Diff line number Diff line change
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    ## This Script is intended to be used for Querying remaining time and resetting Terminal Server (RDS) Grace Licensing Period to Default 120 Days.
    ## Developed by Prakash Kumar ([email protected]) May 28th 2016
    ## www.adminthing.blogspot.com
    ## Disclaimer: Please test this script in your test environment before executing on any production server.
    ## Author will not be responsible for any misuse/damage caused by using it.

    Clear-Host
    $ErrorActionPreference = "SilentlyContinue"

    ## Display current Status of remaining days from Grace period.
    $GracePeriod = (Invoke-WmiMethod -PATH (gwmi -namespace root\cimv2\terminalservices -class win32_terminalservicesetting).__PATH -name GetGracePeriodDays).daysleft
    Write-Host -fore Green ======================================================
    Write-Host -fore Green 'Terminal Server (RDS) grace period Days remaining are' : $GracePeriod
    Write-Host -fore Green ======================================================
    Write-Host
    $Response = Read-Host "Do you want to reset Terminal Server (RDS) Grace period to Default 120 Days ? (Y/N)"

    if ($Response -eq "Y") {
    ## Reset Terminal Services Grace period to 120 Days

    $definition = @"
    using System;
    using System.Runtime.InteropServices;
    namespace Win32Api
    {
    public class NtDll
    {
    [DllImport("ntdll.dll", EntryPoint="RtlAdjustPrivilege")]
    public static extern int RtlAdjustPrivilege(ulong Privilege, bool Enable, bool CurrentThread, ref bool Enabled);
    }
    }
    "@

    Add-Type -TypeDefinition $definition -PassThru

    $bEnabled = $false

    ## Enable SeTakeOwnershipPrivilege
    $res = [Win32Api.NtDll]::RtlAdjustPrivilege(9, $true, $false, [ref]$bEnabled)

    ## Take Ownership on the Key
    $key = [Microsoft.Win32.Registry]::LocalMachine.OpenSubKey("SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod", [Microsoft.Win32.RegistryKeyPermissionCheck]::ReadWriteSubTree,[System.Security.AccessControl.RegistryRights]::takeownership)
    $acl = $key.GetAccessControl()
    $acl.SetOwner([System.Security.Principal.NTAccount]"Administrators")
    $key.SetAccessControl($acl)

    ## Assign Full Controll permissions to Administrators on the key.
    $rule = New-Object System.Security.AccessControl.RegistryAccessRule ("Administrators","FullControl","Allow")
    $acl.SetAccessRule($rule)
    $key.SetAccessControl($acl)

    ## Finally Delete the key which resets the Grace Period counter to 120 Days.
    Remove-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod'

    write-host
    Write-host -ForegroundColor Red 'Resetting, Please Wait....'
    Start-Sleep -Seconds 10

    }

    Else
    {
    Write-Host
    Write-Host -ForegroundColor Yellow '**You Chose not to reset Grace period of Terminal Server (RDS) Licensing'
    }

    ## Display Remaining Days again as final status
    tlsbln.exe
    $GracePost = (Invoke-WmiMethod -PATH (gwmi -namespace root\cimv2\terminalservices -class win32_terminalservicesetting).__PATH -name GetGracePeriodDays).daysleft
    Write-Host
    Write-Host -fore Yellow =====================================================
    Write-Host -fore Yellow 'Terminal Server (RDS) grace period Days remaining are' : $GracePost
    Write-Host -fore Yellow =====================================================

    ## Cleanup of Variables
    Remove-Variable * -ErrorAction SilentlyContinue