Houghton Mifflin Harcourt experienced a minor incident on March 10, 2026 affecting Content and Resources, lasting 1d. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- 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.
- 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.
- 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.
- 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.
- resolved Mar 11, 2026, 04:00 PM UTC
This incident is now resolved.