Measures against vulnerability for network devices in Bunkyo School Building (2021/12/22)

A vulnerability has been discovered in network equipment at Bunkyo School Building

We will fix this problem at the next date and time.

Network communication will not be interrupted during the operation, however, communication may become unstable at the Bunkyo school building.

Date: Wednesday, December 22, 2021, 12:30-13:30
Content: Maintenance of network equipment in Bunkyo school building

(12/16 update)(postponed)Maintenance for Virtual environment of ACCC

The maintenance been postponed.
We will announce the postponed schedule on this web page as soon as it is decided.(update 2021/12/16)

The maintenance for virtual environment of ACCC will be take place on December 19th(Sun). The servers on the environment are not available for about 10 minutes between 8:30 to 9:30.

Mainly affected systems are as follows:

  • Library System
  • Groupware office system (mail system for @un domain)
  • Mail Gateway
  • Zengaku Computer System
  • Rental servers (operated by ACCC)

*2021/12/13 Time has changed.

(Fixed)Trouble reported in playing MS Stream video

This problem has been fixed. We apologize for the inconvenience.

We have been reported trouble in playing MS Stream video and are querying Microsoft.
We apologize for your inconvenience.

Maintenance of Network Equipment in Bunkyo School Building, Tokyo Campus (postponed)

The following maintenance has been postponed.


Maintenance of the network equipment at the Bunkyo School Building will be performed on the following date and times.

During the maintenance, the network of Bunkyo School Building and the Elementary School, University Tsukuba will be down.

There will be no impact on other schools belonging to the Education Bureau of the Laboratory Schools other than the Elementary School, University Tsukuba.

Date: Sunday, December 19, 2021, 10:00-11:00 (about 15 min)

Content: Maintenance of network equipment in Bunkyo school building