Recently someone asked me about, how to disable emoticons, this is very simple to disable emoticons from Lync client however if you want disable emoticons for all user then what?

disable it from lync server

New-CsClientPolicy -Identity Test1

Get-CsClientPolicy -Identity Test1

Set-CsClientPolicy -Identity Test1 -DisableEmoticons $True

Grant-CsClientPolicy -Identity username -PolicyName Teat1