[Announcement] Renewal of Web Service Portal

The log-in system for Web Service Portal will be changed in September 2025

Starting September 28, 2025, the log-in system for Web Service Portal will shift from organization-based to individual email-based.
Prior to this change, we will open a pre-registration site for Web Service Portal users to register email addresses.
Please be aware that you may not be able to log-in our services after September 28, 2025 if you have not completed your pre-registration.

Request for Pre-registration of Email Address

  • To ensure a smooth transition to the new log-in system, please pre-register your email address.
  • A special site for pre-registration will be opened. Follow the instructions provided in the upcoming information.
  • Pre-registration period: June 15, 2025 – September 14, 2025.
NKAuth

New Log-in System

  • Log-in ID will be individual accounts for each person. (Currently per organization / company.)
  • Enable to access multiple services of Web Service Portal with a single log-in, without needing separate log-in for each service.
  • Current organizational information and service usage history will be retained, allowing continued use of services without reconfiguration.
NKAuth pre-registration

FAQ

We have provided frequently asked questions about changing the log-in system.
Q&A list

Address and Contact Details

NIPPON KAIJI KYOKAI(ClassNK)
CCH Portal Account Helpdesk
Contact form: https://forms.office.com/r/1cPRhM26MH
E-Mail: cch-portal@classnk.or.jp