Student Alumni

Web Login to on Microsoft 365 (M365)

  1. Login from University Email Services Website

    Click the “M365 Sign-in Page” button from the University Email Services page ( or, at the CityU Authentication System, please enter your CityU EID and password to login.

  1. Login from Microsoft

    At, type in your primary email address ( You will then be redirected to the CityU Authentication System. Enter your EID and password to login.

You are strongly recommended to use a web browser with latest version listed below:

- Google Chrome
- Firefox
- Microsoft Edge
- Safari

For enquiries, please contact IT Service Desk at +852 3442-6488 or email to

You can click this link to go to M365 Sign-in page now:

The use of the above Email services is governed by the University's "Policies on Use of IT Services & Resources".