ITS Scheduled Maintenance 2020

ITS carries out regular maintenance of the University’s central IT environment generally in the first weekend of each month, from Saturday 1:00 pm to Sunday 11:00 pm.  The monthly maintenance windows in 2020 are scheduled as follows:

On top of the above maintenance windows, 4 additional timeslots are scheduled in the following weekends (from Saturday 1:00 pm to Sunday 11:00 pm) in 2020 for coping with the increasing number of systems in operation:

During these periods, certain central IT services/systems could be closed or intermittently unavailable.  We will announce the specific services/systems affected prior to each maintenance window via e-Notice and this website -  Departments are advised to avoid having critical events/activities that would rely heavily on the availability of central IT services during the maintenance windows.

For urgent situations, ITS may be required to carry out system maintenance/repair works outside the regular schedules.  We will notify the users concerned via the appropriate communication channels under such circumstances.


  1. The maintenance window in January 2020 is postponed for a week until end of the online assessment schedule of the first semester.
  2. For ITS scheduled maintenance in year 2019, please refer to