During Thailand’s COVID-19 lockdown, all universities in the country must continue their classes in the Summer Semester with online learning. This article described our university’s policy and practice to support university-wide online learning while all faculties were working from home. Our enforcement approach included a Learning Management System, a teaching guideline for our instructors, an online training course for the instructors, a quality control process, and a teaching assessment to obtain feedback from students. Our teaching guideline was composed of various requirements from many online learning studies, which were implemented on the university-wide scale. We measured our approach and teaching guideline with student satisfaction for the online course for the entire university. Due to the rushing nature of the situation, many instructors could not finish all teaching preparation before the semester started. However, the results showed that the students were satisfied with their online classes with an average score of 4.54 on a 5-point Likert Scale.