Why hide the Call and Search buttons?

In Skype for Business (Lync), there are situations in which users don't need the functionalities of the Call and Search buttons. Also, you may want to prevent users from clicking the Call button in a chat room by mistake. Doing this turns the chat session into a conference call.

This article describes how to hide the mode bar that contains the Call and Search buttons at the bottom of persistent chat rooms.

How to hide the mode bar in persistent chat rooms

Warning: Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it,back up the registry for restorationin case problems occur.


To hide the Call and Search buttons, the administrator can follow these steps:

  1. Deploy the following update to all Skype for Business users, as appropriate:

  2. Deploy the following registry update to all Skype for Business users:

    1. In Registry Editor, locate the following registry subkey, as appropriate:

      Skype for Business 2015 (Lync 2013)
      HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\15.0\Lync

      Skype for Business 2016
      HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Lync

    2. Create a DWORD key that has the following name and value:

      Name: HideGroupChatRoomModebar
      Value: 1

  3. Ask all Skype for Business users to restart Skype for Business.

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