OutageDB

HMH Platform outage history and status

Is HMH Platform down right now?

No
All Systems Operational Official status as of Oct 26, 2026, 16:17 UTC (refreshing…)
100%
uptime, 90 days
0
incidents, 90 days
—
median time to fix
May 29, 2026
last incident

HMH Platform components

ThinkCentral

Holt McDougal Online

HMH Ed

HMH Platform outage history

Nov: 1 incidents, 209 min of major outage 1 Nov Dec: 0 incidents, 0 min of major outage Dec Jan: 2 incidents, 1440 min of major outage 2 Jan Feb: 1 incidents, 0 min of major outage 1 Feb Mar: 1 incidents, 0 min of major outage 1 Mar Apr: 0 incidents, 0 min of major outage Apr May: 1 incidents, 0 min of major outage 1 May Jun: 0 incidents, 0 min of major outage Jun Jul: 0 incidents, 0 min of major outage Jul Aug: 0 incidents, 0 min of major outage Aug Sep: 0 incidents, 0 min of major outage Sep Oct: 0 incidents, 0 min of major outage Oct
HMH Platform incidents per month, last 12 months. Red: months with a major or critical outage.
Started (UTC)IncidentImpactDuration
May 29, 2026, 14:10 UTC Ed Login Issue
Login
 No impact 3 days 5 h
Mar 10, 2026, 15:07 UTC Classcraft on Ed
Content and Resources
 Minor 24 h 54 min
Feb 20, 2026, 18:59 UTC Content on Waggle
Content and Resources
 Minor 2 days 20 h
Jan 29, 2026, 16:10 UTC Contact Center: Intermittent Issues
Contact Center
 Minor 3 h 52 min
Jan 8, 2026, 19:52 UTC Classes and Content Not Loading on Ed
Content and Resources
 Major 3 days 22 h
Nov 10, 2025, 16:45 UTC Classcraft Service Interruption
Content and Resources
 Major 3 h 29 min
Oct 20, 2025, 16:34 UTC Intermittent Service Degradation due to AWS Outage
Login, Login, Login, Content and Resources, Content and Resources, Content and Resources
 Minor 23 h 38 min
Oct 6, 2025, 13:55 UTC Delay in Manual Assessment Scoring on Ed
Assignments
 Minor 7 days 1 h
Sep 19, 2025, 13:05 UTC Service Interruption on Ed
Content and Resources, Assignments
 No impact 8 h 06 min
Aug 13, 2025, 20:27 UTC Technical Support Phone Service
Rostering
 No impact 16 h 55 min
Jul 20, 2025, 17:25 UTC HMH Rostering Service Interruption
Rostering, Rostering, Rostering
 No impact 53 days 23 h
May 29, 2025, 00:41 UTC Holt McDougal Online Service Interruption
Login, Content and Resources, Assignments, Reporting
 No impact 39 h 49 min
May 12, 2025, 15:11 UTC Holt McDougal Online Service Interruption
Login, Assignments
 No impact 4 h 19 min
May 6, 2025, 14:35 UTC Amira on Ed Service Disruption
Content and Resources
 Major 32 min
Mar 7, 2025, 18:04 UTC HMH Ed Assignments Service Interruption
Assignments
 No impact 3 days 2 h
Mar 7, 2025, 14:28 UTC HMH Ed Service Interruption (Recovered and Monitoring)
Content and Resources, Assignments
 No impact 1 h 27 min
Jan 30, 2025, 19:45 UTC Delay in Manual Assessment Scoring on Ed
Assignments
 No impact 22 h 14 min
Jan 28, 2025, 19:42 UTC Read 180 Performance Update
Content and Resources
 No impact 23 h 29 min
Dec 9, 2024, 16:39 UTC Read 180 Software Access
Content and Resources
 No impact 3 h 51 min
Nov 19, 2024, 17:24 UTC Single Sign On Access via Classlink
Login, Login, Login
 No impact 4 h 35 min
Nov 14, 2024, 19:27 UTC Service Interruption to Waggle
Content and Resources
 No impact 2 h 39 min
Nov 12, 2024, 02:26 UTC Service Interruption to Read 180
Content and Resources
 No impact 17 h 46 min
Jul 22, 2024, 15:03 UTC CrowdStrike Global IT Event
Content and Resources, Content and Resources, Content and Resources, Assignments, Assignments, Reporting
 No impact 51 min

23 incidents in our archive since July 22, 2024.

When and where HMH Platform fails

By weekday

Most incidents start on Mon.

  • Mon6
  • Tue5
  • Wed1
  • Thu5
  • Fri5
  • Sat0
  • Sun1

Most affected, last 12 months

  • Content and Resources4
  • Contact Center1
  • Login1

When HMH Platform went down with others

Other education services

FAQ

Is HMH Platform down right now?
At our last check HMH Platform's official status page reported: All Systems Operational. This page refreshes the status every few minutes.
How often does HMH Platform go down?
HMH Platform reported 0 incidents in the last 90 days (0 major or critical), with 0 minutes of major outage: 100% uptime.
When was the last HMH Platform outage?
The latest reported incident started on May 29, 2026, 14:10 UTC: "Ed Login Issue", resolved after 3 days 5 h.

Source: HMH Platform official status page · RSS of HMH Platform incidents · status badge for your site