Abstract: You might come into a situation where a PC has SfB installed, but the user who is using this PC do not have a SfB login and therefore couldn´t login. The issue is now, that if he get an URL to join an SfB meeting URL (https://meet.contoso.com/john.smith/ZR2RJ141) the local and non configured SfB client will popup and the user isn´t able to join the meeting with the "Skype for Business Web App plug-in". How can that be solved?