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zyBooks Outage History

Every past zyBooks outage tracked by IsDown, with detection times, duration, and resolution details.

There were 49 zyBooks outages since January 2018. The 4 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major February 19, 2026

February 2026: Partial Slowdown: Advanced zyLabs are not loading

Detected Feb 19, 2026 11:22 AM EST · Resolved Feb 19, 2026 11:46 AM EST · Duration 24 minutes

Major November 18, 2025

November 2025: 3rd party tool (Cloudflare) affecting platform

Detected Nov 18, 2025 9:28 AM EST · Resolved Nov 18, 2025 10:06 AM EST · Duration 38 minutes

Minor October 20, 2025

October 2025: Score submission may be delayed due to a 3rd party issue. Student scores are being saved and will be able to be sent manually once the issue is resolved.

Detected Oct 20, 2025 1:29 PM EDT · Resolved Oct 22, 2025 2:39 PM EDT · Duration 2 days

Major June 12, 2025

June 2025: 3rd party tool (Firebase) affecting Advanced Labs

Detected Jun 12, 2025 2:55 PM EDT · Resolved Jun 12, 2025 4:58 PM EDT · Duration about 2 hours