Is Houghton Mifflin Harcourt down?

Over the last 90 days, Houghton Mifflin Harcourt reported 99.72% uptime on its official status page. That figure is calculated from the public incident timeline at https://status.hmhco.com — each minute of degraded, partial-outage, or major-outage status counts against the total. Sign up to Pingoru free to see Houghton Mifflin Harcourt's uptime history rolling forward in real time.

Yes — Houghton Mifflin Harcourt has had 2 incidents reported on its official status page so far in 2026. The full timeline (start times, durations, components affected) is shown above on this page. Pingoru re-checks the status page every 5 minutes so the count stays current.

The most recent Houghton Mifflin Harcourt incident was "Classcraft on Ed", which started on March 10, 2026 and was resolved on March 11, 2026. Pingoru captured this directly from https://status.hmhco.com. See the full incident card above for affected components and the update timeline.

Based on the last 90 days, Houghton Mifflin Harcourt averages 0.7 reported incident per month on its official status page. Pingoru tracks each one with start time, duration, severity, and affected components — so you can see the pattern at a glance instead of digging through the vendor's archive.

Houghton Mifflin Harcourt's official status page is https://status.hmhco.com. Pingoru polls it every 5 minutes and renders the same data here, alongside every other cloud or SaaS provider you depend on — so you can spot multi-vendor incidents (e.g. AWS + Stripe + Cloudflare degrading at the same minute) without flipping between tabs.

Houghton Mifflin Harcourt is up. Pingoru checks the official status page every 5 minutes and flips this headline the moment Houghton Mifflin Harcourt reports a change. Current status is based on 16 tracked services.

We read https://status.hmhco.com directly, using Houghton Mifflin Harcourt's own status page. If the vendor reports an incident, you see it within one check cycle — not after someone manually marks the page as down.

Create a free Pingoru account and add Houghton Mifflin Harcourt as a monitor. You can filter to specific services, pick severity thresholds, and route alerts via email, Slack, Discord, or a webhook.

Three common reasons: • A real Houghton Mifflin Harcourt incident that hasn't been acknowledged on their public status page yet — vendor status pages are updated manually and typically lag the first customer reports by 10–30 minutes. • A regional or account-scoped issue affecting a subset of customers — these rarely trigger a global status-page change. • A local problem: ISP / DNS / your own software. Try reproducing from a mobile data connection and from a different network to isolate. If you suspect a real Houghton Mifflin Harcourt issue that isn't reflected yet, contact their support to escalate. Subscribing here means you get the alert the moment they do post an update.

We use Houghton Mifflin Harcourt's own status page at https://status.hmhco.com. Nothing is read in a way the vendor hasn't explicitly made public — we use the same data their own dashboard uses. So our data is as accurate as what you'd see loading the status page yourself, but rolled into one dashboard alongside every other service you depend on.

All tracked Houghton Mifflin Harcourt components are reporting operational. No incidents are currently affecting service.