If you are having issues sharing your screen in Skype, the following tips may help.
You need to be in a voice or video call with the person you want to share your screen with. If you're not in a call, you won't have the option to share screens.
Make sure that you and the person you are sharing your screen with are using a version of Skype that supports screen sharing . Get the latest version of Skype .
Check that you have enough bandwidth to share your screen, and close all applications that may be using your bandwidth or slowing your computer down. For example, music streaming applications, or file-sharing applications. Also, make sure that both you and the person you are sharing screens with are using the latest version of Skype .
If the person that you are sharing your screen with is on an unsupported device or an older version of Skype, they may still be able to view your screen, but won’t be able to share their own. We recommend that they get the latest version of Skype .