Since around October 1, some users have been experiencing an issue signing in to the student email service (KUMOI), as described below:

>On the Microsoft “Pick an account” screen displayed during sign-in, selecting an account marked as “Signed in” does not complete the authentication process. Instead, the same account selection screen is displayed again. (When this issue occurs on a PC, Error Code: 16000 may be displayed.)

In some cases, accessing KUMOI from a different PC may resolve the issue. Please try this as a temporary workaround.

We sincerely apologize for the inconvenience.

We are currently investigating the cause of the issue and working to restore the service. We will provide another update once the issue has been resolved.

We apologize for any inconvenience this may cause and appreciate your understanding and cooperation.