Houghton Mifflin Harcourt Outage History

Houghton Mifflin Harcourt is up right now

There were 2 Houghton Mifflin Harcourt outages since February 20, 2026 totaling 92h 58m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.hmhco.com

Minor March 10, 2026

Classcraft on Ed

Detected by Pingoru
Mar 10, 2026, 03:07 PM UTC
Resolved
Mar 11, 2026, 04:00 PM UTC
Duration
1d
Affected: Content and Resources
Timeline · 5 updates
  1. investigating Mar 10, 2026, 03:07 PM UTC

    HMH engineering teams are currently investigating an issue where Classcraft is not visible on Ed. Another update will be provided here as soon as more information is available.

  2. investigating Mar 10, 2026, 04:13 PM UTC

    We are continuing to investigate the root cause of Classcraft not displaying on Ed. Thank you for your patience.

  3. identified Mar 10, 2026, 04:42 PM UTC

    The cause of Classcraft not displaying on Ed has been identified and we are currently working on a fix.

  4. monitoring Mar 10, 2026, 05:39 PM UTC

    Thank you again for your patience. A fix has been implemented and Classcraft is now available for impacted users. Out of an abundance of caution, we will be monitoring this incident into the day tomorrow. If you experience any issues accessing Classcraft, please contact HMH Technical Support.

  5. resolved Mar 11, 2026, 04:00 PM UTC

    This incident is now resolved.

Read the full incident report →

Minor February 20, 2026

Content on Waggle

Detected by Pingoru
Feb 20, 2026, 06:59 PM UTC
Resolved
Feb 23, 2026, 03:03 PM UTC
Duration
2d 20h
Affected: Content and Resources
Timeline · 3 updates
  1. investigating Feb 20, 2026, 06:59 PM UTC

    We are currently investigating an issue where some content on Waggle is not loading as expected. Engineering teams are actively engaged. We apologize for the inconvenience and will post another update here as soon as more information is available.

  2. identified Feb 20, 2026, 08:18 PM UTC

    The cause of some content not loading on Waggle has been identified. HMH engineers are currently working on implementing a fix.

  3. resolved Feb 23, 2026, 03:03 PM UTC

    This incident is now resolved.

Read the full incident report →

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