---
title: "Persistent Chat Machines Expander"
ms.reviewer: 
ms.author: v-lanac
author: lanachin
manager: serdars
ms.date: 3/27/2015
audience: ITPro
ms.topic: article
f1.keywords:
- CSH
ms.custom:
- ms.lync.tb.PersistentChatMachinesExpander
ms.prod: skype-for-business-itpro
localization_priority: Normal
ms.assetid: 15bc1c8f-71bd-4d66-bba1-cac0f2fe90bf
description: "You activate or deactivate a deployed Persistent Chat Server or Persistent Chat Server pool by using the servers or pools listed in Machine state settings. You select a server or pool in the list and click the Make active button to set a server or pool as active."
---

# Persistent Chat Machines Expander
 
You activate or deactivate a deployed Persistent Chat Server or Persistent Chat Server pool by using the servers or pools listed in **Machine state settings**. You select a server or pool in the list and click the **Make active** button to set a server or pool as active.
  
You set a deployed Persistent Chat Server or Persistent Chat Server pool to inactive by selecting the server or pool in the list and click **Make inactive**. At least one server must be set to active.
  
 **OK** Accepts and commits changes to the dialog.
  
 **Cancel** Discards changes and closes the dialog.
  
 **Help** Displays this help screen.
  
## See also

[Plan for Persistent Chat Server in Skype for Business Server 2015](../../plan-your-deployment/persistent-chat-server/persistent-chat-server.md)
  
[Add Persistent Chat Server to your Skype for Business Server 2015 topology](../../deploy/deploy-persistent-chat-server/add-persistent-chat-server.md)
