ZyBooks experienced a major incident on November 18, 2025 affecting learn.zybooks.com - zyBooks content and platform and Classic zyLabs and Programming Challenge Activities and 1 more component, lasting 33m. The incident has been resolved; the full update timeline is below.
Affected components
learn.zybooks.com - zyBooks content and platformClassic zyLabs and Programming Challenge ActivitiesAdvanced zyLabs SystemExams assessment systemzyBooks.com - Home pages
Update timeline
- investigating Nov 18, 2025, 02:28 PM UTC
One of the 3rd party tools, Cloudflare, is currently experiencing an outage. You can check their status page here: https://www.cloudflarestatus.com. While this issue persists, our platform may be unresponsive.
- resolved Nov 18, 2025, 03:01 PM UTC
This incident has been resolved.