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YUCTS Status

Install YUCTS Status

Add YUCTS Status to your home screen for quick access. The latest status you loaded stays available offline.

On iPhone and iPad (Safari)

  1. Tap the Share button in the toolbar.
  2. Choose “Add to Home Screen”.
  3. Tap “Add”.

On Mac (Safari)

Choose File › Add to Dock (macOS Sonoma or later).

On Chrome, Edge and Android

Use the install button below, or the install icon in the address bar / browser menu.

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Emergency PHP Security Maintenance Notice

CompletedEnded last week
– (GMT+9)

Planned in Japan Standard Time (GMT+9)

To address two critical vulnerabilities in the PHP runtime (CVE-2026-109618 and CVE-2026-109619), we will perform necessary security patches, system updates, and compatibility checks to protect the security and stability of our website and related services. We will prioritize minimizing service disruption and aim to keep the website operational throughout the maintenance process. However, some features may experience temporary unavailability, slower response times, or brief connection interruptions. We will continue monitoring system performance and update this notice once service stability has been confirmed. Thank you for your understanding and patience.