On this page, you can can learn how to join and participate in a Skype for Business meeting using the Web App.
If you don’t have the desktop version of Skype for Business, or don’t have a Skype for Business account, you can use Skype for Business Web App to join a Skype Meeting from your browser.
You don't need to download or install any apps to join a Skype Meeting with Skype for Business Web App, unless you are using Google Chrome. Just select the link in the meeting request email and follow the instructions in the browser window to join. Chrome users should follow the directions below about installing and activating the necessary plug-in.
As of April 2017, the Web App does not work with Firefox versions 52.x and above because plug-in support has been disabled in that browser. The solution is to use another browser such as Internet Explorer, Chrome, Edge on Windows 10; or to install the 32-bit version of the Firefox Extended Support Release (ESR).
You can call in to a Lync Meeting if you don’t have a computer, or if you prefer to use a phone for audio. All you need is the conference number and meeting ID, which is in the meeting request.
For more information, see Skype for Business, Joining a meeting .