In light of growing concerns surrounding the COVID-19, many conference organizers are cancelling, postponing, or virtualizing their meetings. These extraordinary circumstances will prevent us from having a successful conference at this time. Therefore, as the General Chair of the ICCWCS Conference, and after much thoughtful deliberation, I regret to announce the decision to cancel the ICCWCS2020 ‘The 4th International Conference on Computing and Wireless Communication Systems (ICCWCS)’ scheduled to be held initially from 19 to 20 November 2020 at ENSA of Tetuan, MOROCCO. The health and safety of our authors, participants, members, and volunteers is our priority. Thank you for your support and understanding, and wishing you the very best.