Some services were unavailable on 2020/10/11 from 05：20 a.m. to 11：10 a.m. due to a DNS server failure.
Now it has been recovered.
We apologize for any inconvenience this may cause.
As of 8:53, it seems that a failure has occurred on the Microsoft side.
As a result, you will not be able to log in to various services such as Stream, OneDrive, and Teams.
※You can use it if you are logged in to the service.
We will add more information as it becomes available.
https://status.office.com/
[9:28 postscript]
I was able to confirm the login in this section.
It seems that the official restoration notice has not been issued yet.
We are sorry for the clerical network failure at the following time and date. We apologize for any inconvenience this may cause you.
Date of the failure
2020/7/7 15:40～16:07
Affected service
The services using clerical network
Situation
Communication from the clerical network to the university or the Internet was not possible.
Cause
Due to happenning the failure of exchanging network route information between clerical network router and its firewall, exchanging network route information is unavailable, and unable to communicate. It was recovered with switching the Active-Standby of the firewall, but this failure may be caused by software of router or it of firewall because failure phenomenon is not happen with switching Active-Standby of the firewall to the same position that the failure happens. The root cause of the failure is under investigation.
At the following date and time, an error occurred on the ADFS login authentication server and the login failed due to an authentication error.
We are terribly sorry to cause you inconvenience.
Date and time:
May, 27, 2020 06:24 - 09:05
Target system:
Scomb, Zoom, Office365, Other systems linked with ADFS authentication
As of 8:58, there is a problem with ADFS that unable to log in to Scomb and Zoom.
We will contact you as soon as we are able to recover.
