Why can't I hear anything even though I’m logged into the online seminar? 25 June 2021 12:49 Updated Kindly check whether the speakers on your PC / Mac are switched on or whether you may need to plug in headphones. Related articles What are the technical requirements for participating in an online seminar? Why is the picture / sound suddenly gone during the online seminar? Why can't I log into the online seminar? As a teacher, how do I get the right license code for a Media bundle? What steps do I have to take or observe before the online seminar?