For Skype for Business 2015Make sure your version of Office 2013 is Greater than 15.0.4625.1000You have the following registry key Registry KeyTypeValueHKCU\SOFTWARE\Microsoft\Office\15.0\Common\Identity\EnableADALREG_DWORD1HKCU\SOFTWARE\Microsoft\Office\15.0\Common\Identity\VersionREG_DWORD1Install Skype for Business Online, Windows PowerShell […]