Online web-based learning which is a unique form of distance education has been widely utilized in the higher education sector around the world. It is reported that significant growth in online programs enrollments during the last five years with one in five students now selecting to study online. The purpose of this critical analysis was to explore a group of postgraduate students online learning style during COVID-19 public health crisis. Overall, the use of Zoom Virtual classroom and online forum discussion for postgraduate students may be an effective and practical approach to support student learning. However, several challenges were exposed mainly the application of technology, student participation and acceptance of online teaching methods, students learning styles and educators support to the student learning.