Skype for Business Server 2015 Cumulative Update 2 (CU2)


Skype for Business Server 2015 Cumulative Update 2 (CU2) has been released which includes Shared Line Appearance (SLA) and Modern Authentication (ADAL).  SLA enables you to configure a workgroup with multiple devices that can each answer calls to a shared phone number (extension). SLA is only supported on specific Polycom phone devices (VVX300, 400, 500 and 600) with firmware update 5.4.1.  Please note that SLA *is not supported* with the Skype for Business desktop/mobile clients OR with other devices (not listed previously).  ADAL is designed to make secured resources in your directory available to client applications (like Skype for Business) via security tokens. ADAL works with OAuth 2.0 to enable more authentication and authorization scenarios, like Multi-factor Authentication (MFA), and more forms of SAML Authentication.

More information on Modern Authentication (ADAL) can be found here:

More information on Shared Line Appearance (SLA) can be found here:

KB for CU2 and installation instructions:

Components updated in CU2:

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