1.Open Office Portal ( portal.office.com ) on Edge/Chrome/Firefox
2.Enter CEIBS mail account
3.Enter password and Sign in
4.Click Install Office->Office 365 apps
5.Download and open OfficeSetup.exe
6.Waiting for the app installation to complete
7.Click Close
8. Open any office app and sign-in with CEIBS account to activate it. Done.