(2026/5/29 14:00 Update)
The scheduled maintenance work has been completed.
The system is now available for normal use.
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Due to maintenance work, the J‑UPKI system (client certificate issuance service) will be temporarily suspended as follows.
Date and Time:
Friday, May 29, 2026, 13:00 – 17:00
Impact:
During the above period, the issuance and revocation of client certificates may be temporarily unavailable.
The service will resume as soon as the maintenance is completed.
Work Details:
Update of certificates for registration administrators
If you have any questions, please contact the Center for Information Infrastructure.