Consider the following scenario:
- You configure server-to-server authentication between Microsoft Exchange Server 2013 that has cumulative update 7 installed and Microsoft Lync Server 2013 that has cumulative update 5 installed.
- You run the Set-CsUserServicesPolicy -Identity global -UcsAllowed $True command to enable the unified contact store (UCS) feature.
- You use Chinese input method editors (IME) to create a contact group in Microsoft Lync 2013 (Microsoft Skype for Business) that has November 11, 2014 update for Lync 2013 (KB2899507) installed.