Heinemann incident

Intermittent Service Degradation due to AWS Outage

Resolved after 23 hours 34 minutes, affecting Login and Content and Resources, on October 20, 2025.

monitoring Oct 21, 2025, 12:16 PM UTC

AWS service interruption has been resolved as of 10.20. HMH will continue to monitor for any residual impact as a result of this interruption.

Started
Oct 20, 2025, 04:37 PM UTC
Resolved
Oct 21, 2025, 04:12 PM UTC
Duration
23h 34m
Detected by Pingoru
Oct 20, 2025, 04:37 PM UTC

Affected components

LoginContent and Resources

Update timeline

  1. monitoring Oct 20, 2025, 04:37 PM UTC

    We are aware of an ongoing disruption to AWS services which could still be impacting some HMH products, such as some content or videos not loading as expected. AWS has indicated they are making progress on resolving the issue and we continue to monitor this event closely.

  2. monitoring Oct 20, 2025, 09:23 PM UTC

    Impacts to some products and services will continue while AWS takes action to resolve the disruption on the impacted zone. We continue to monitor the situation and will provide another update as soon as possible.

  3. monitoring Oct 21, 2025, 12:16 PM UTC

    AWS service interruption has been resolved as of 10.20. HMH will continue to monitor for any residual impact as a result of this interruption.

  4. resolved Oct 21, 2025, 04:12 PM UTC

    This incident has been resolved.

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