Dear Members of Korea University,

The ONE-STOP Service Center will perform an emergency renewal of the firewall security certificate to ensure the stable operation of the Smart Card System.

During this maintenance, network disconnection will occur, and related services will be temporarily unavailable. We kindly ask for your understanding.

1. Maintenance Schedule

Time: April 13, 2026 (Mon), 09:30 – 10:30 (Approx. 1 hour)

2. Maintenance Details

Emergency renewal of the firewall security certificate

3. Affected Services & Workarounds

A. ONE-STOP Service Center

- Issuance of mobile and physical Student ID cards: Unavailable

- Smart Card-based attendance system: Unavailable

B. Library Services

- Entrance Gates: Kiosk entry unavailable (Gates will remain open)

- Seat Assignment: Kiosks unavailable (Please use the KLIB2 app or website)

- Book Checkout/Return: Self-service machines unavailable (Please use the circulation desks)

C. Space Management System

- Space reservations and access requests: Unavailable

- Entry to reserved spaces: Unavailable

We apologize for the inconvenience. We will do our best to complete the work promptly and restore normal service.