User RegistrarClient Experience Skype for Business / Lync Online Skype for Business UI Skype for Business Server 2015 Lync Server 2013 Lync UI (Skype for Business UI on first run) Lync Server 2010

Skype for Business UILync UI Skype for Business / Lync Online Skype for Business Server 2015 Lync Server 2013 Lync Server 2010 Client experience showing Lync UI switching to Skype for Business UI can be found herehere Client experience showing Skype for Business UI switching to Lync UI can be found herehere

Step 1 Running Lync 2013 Step 2 Lync 2013 updated to Skype for Business Step 3 Client starts in Skype for Business UI Step 4 Skype for Business welcome screen is shown

Step 1 Running Lync 2013 Step 2 Lync 2013 updated to Skype for Business Step 3 Client starts in Lync UI

Step 1 Running Lync 2013 Step 2 Lync 2013 updated to Skype for Business Step 3 Client starts in Skype for Business UI Step 4 Skype for Business welcome screen is shown Step 5 Client is prompted to restart to switch to Lync UI Step 6 Client starts in Lync UI

Step 1 Running Lync UI Step 2 Client is prompted to restart to switch to Skype for Business UI Note: This prompt to switch will only be shown after the client has restarted once after the change in policy. Step 3 Client starts in Lync UI

Step 1 Running Skype for Business Step 2 Client is prompted to restart to switch to Lync UI Note: This prompt to switch will only be shown after the client has restarted once after the change in policy. Step 3 Client starts in Lync UI

Step 1 – Deploy client build (April, 2015) or later

Step 1 – Deploy server build (December, 2014) or later Step 2 – Complete configuration of any of the 3 following scenarios Step 3 – Deploy client build (April, 2015) or later set-csclientpolicy -EnableSkypeUI $true new-CsClientPolicy -Identity EnableSkypeUI -EnableSkypeUI $true grant-csclientpolicy -PolicyName EnableSkypeUI Set-csclientpolicy ExistingClientPolicy -EnableSkypeUI $true Scenario 1 – Skype for Business UI via Global Policy Scenario 2 – Skype for Business UI via new client policy instance Scenario 3 – Skype for Business UI via existing client policy instance

Step 1 – Deploy server build (February, 2015) or later Step 2 – Complete configuration of any of the 3 following scenarios Step 3 – Deploy client build (April, 2015) or later set-csclientpolicy -EnableSkypeUI $true new-CsClientPolicy -Identity EnableSkypeUI -EnableSkypeUI $true grant-csclientpolicy -PolicyName EnableSkypeUI Set-csclientpolicy ExistingClientPolicy -EnableSkypeUI $true Scenario 1 – Skype for Business UI via Global Policy Scenario 2 – Skype for Business UI via new client policy instance Scenario 3 – Skype for Business UI via existing client policy instance

Step 1 – Complete configuration of any of the 2 following scenarios Step 2 - Set "EnableSkypeUi"=hex:00,00,00,00 via registry or GPOvia registry or GPO Step 3 – Deploy client build (April, 2015) or later grant-csclientpolicy –PolicyName ClientPolicyDisableSkypeUI grant-csclientpolicy -PolicyName ClientPolicyDisableSkypeUI Scenario 1 – Lync UI via Global Policy Scenario 2 – Lync UI via client policy instance

Step 1 – Deploy Skype for Business Server 2015 Step 2 – Complete configuration of any of the 3 following scenarios set-csclientpolicy -EnableSkypeUI $false new-CsClientPolicy -Identity DisableSkypeUI -EnableSkypeUI $false grant-csclientpolicy -PolicyName DisableSkypeUI Set-csclientpolicy ExistingClientPolicy -EnableSkypeUI $false Scenario 1 – Lync UI via Global Policy Scenario 2 – Lync UI via new client policy instance Scenario 3 – Lync UI via existing client policy instance Step 3 - Set "EnableSkypeUi"=hex:00,00,00,00 via registry or GPOvia registry or GPO Step 4 – Deploy client build (April, 2015) or later

Step 1 - Set "EnableSkypeUi"=hex:00,00,00,00 via registry or GPOvia registry or GPO Step 2 – Deploy client build (April, 2015) or later

Step 1 - Set "EnableSkypeUi"=hex:00,00,00,00 via registry or GPOvia registry or GPO Step 2 – Deploy client build (April, 2015) or later

Client Configurations Options Required Desired Client UI Lync Server 2010Lync Server 2013Skype for Business 2015 Skype for Business Online Configuration Steps Client Experience Configuration Steps Client Experience Configuration Steps Client Experience Configuration Steps Client Experience CP  FR  Default Behavior N/A Lync UI (Skype for Business UI on first run) N/A Lync UI (Skype for Business UI on first run) N/A Skype for Business UI N/A Skype for Business UI CP  FR Skype for Business UI N/ANot AchievableN/ANot AchievableN/A Skype for Business UI N/A Skype for Business UI Lync UI N/ANot AchievableN/ANot Achievable CP FR  Skype for Business UI Skype for Business UI Skype for Business UI Skype for Business UI Skype for Business UI Lync UI (Skype for Business on first run) Lync UI (Skype for Business UI on first run) Lync UI (Skype for Business UI on first run) Lync UI (Skype for Business UI on first run) Lync UI (Skype for Business UI on first run) CP FR Lync UI Client experience showing Lync UI switching to Skype for Business UI can be found herehere Client experience showing Skype for Business UI switching to Lync UI can be found herehere

Step 1 – Deploy client build (April, 2015) or later

Step 1 – Deploy client build (April, 2015) or later

Step 1 – Deploy Skype for Business Server 2015 Step 2 – Complete configuration of any of the 3 following scenarios Step 3 – Deploy client build (April, 2015) or later set-csclientpolicy -EnableSkypeUI $false new-CsClientPolicy -Identity DisableSkypeUI -EnableSkypeUI $false grant-csclientpolicy -PolicyName DisableSkypeUI Set-csclientpolicy ExistingClientPolicy -EnableSkypeUI $false Scenario 1 – Lync UI via Global Policy Scenario 2 – Lync UI via new client policy instance Scenario 3 – Lync UI via existing client policy instance

Step 1 – Complete configuration of any of the 2 following scenarios Step 2 – Deploy client build (April, 2015) or later grant-csclientpolicy –PolicyName ClientPolicyDisableSkypeUI grant-csclientpolicy -PolicyName ClientPolicyDisableSkypeUI Scenario 1 – Lync UI via Global Policy Scenario 2 – Lync UI via client policy instance