When you need to disable splash screen for users you, can apply group policy with preferences/register settings adding this key: HKCU\Software\Policies\Microsoft\Office\16.0\Lync\DisableSplashScreen with value of 1. Additionally, you need to have update installed: https://support.microsoft.com/en-us/help/3128049/january-3--2017--update-for-skype-for-business-2016-kb3128049 Source: https://support.microsoft.com/en-us/help/3213034/option-to-suppress-the-skype-for-business-2016-startup-splash-screen
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