Houghton Mifflin Harcourt incident

Classcraft Service Interruption

Major Resolved View vendor source →

Houghton Mifflin Harcourt experienced a major incident on November 10, 2025 affecting Content and Resources, lasting 3h 28m. The incident has been resolved; the full update timeline is below.

Started
Nov 10, 2025, 04:45 PM UTC
Resolved
Nov 10, 2025, 08:14 PM UTC
Duration
3h 28m
Detected by Pingoru
Nov 10, 2025, 04:45 PM UTC

Affected components

Content and Resources

Update timeline

  1. investigating Nov 10, 2025, 04:45 PM UTC

    We are aware of an interruption impacting access to Classcraft. HMH engineering teams are currently investigating the cause and are working to restore service as quickly as possible. We will post another update as soon as more information is available. Thank you for your patience.

  2. monitoring Nov 10, 2025, 04:58 PM UTC

    Service to Classcraft has been restored. We'll continue to monitor performance for the next few hours before calling this officially resolved. Again, thank you for your patience.

  3. resolved Nov 10, 2025, 08:14 PM UTC

    Since restoring service, HMH teams have been monitoring access to Classcraft and this incident is now resolved.