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Is CS50 down?

No reported issues

From cs50.statuspage.io · checked 5 minutes ago · every 5 minutes

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As of 03:32 UTC on 12 November 2026, CS50's status page reports no issues. Its last reported problem was on 11 November 2026: “Partial System Outage”, major outage, for 15 min from 20:52 UTC.

Last problem
11 Nov · 15 min
Problems, last 30 days
34
Typical incident
33 min
Longest in 90 days
17 h 56 min · 21 Oct

Uptime

CS50, last 30 days

89.83 %

100%62.5%25%
Oct 14 Today

Biggest dip: CS50, 17.9 h of issue on Oct 21.

Incidents

Started in the last 7 days

9

630
FSSMTWToday

This week Week before

Latest: CS50, major outage on Nov 11.

Recovery

Median time back online

30 min

17 h 56 min0
30 days ago Today

22 of 34 were over within an hour. Each dot is one incident; the dashed line is the median.

Components 59

All online

  • api.cs50.io
  • cdn.cs50.net
  • certificates.cs50.io
  • check50
  • cli50
  • cs50.ai
  • cs50.courses
  • cs50.dev
  • cs50.edx.org
  • cs50.harvard.edu
  • cs50.readthedocs.io
  • cs50.ly
  • cs50.me
  • forms.cs50.io
  • harvard.cs50.me
  • help50
  • id.cs50.io
  • manual.cs50.io
  • render.cs50.io
  • render50
  • style50
  • submit.cs50.io
  • submit50
  • time.cs50.io
  • vault.cs50.io
  • video.cs50.io
and third-party services... 33 parts
  • <a href="https://auth0.statuspage.io/">Auth0 Management API</a>
  • <a href="https://auth0.statuspage.io/">Auth0 User Authentication</a>
  • <a href="https://status.aws.amazon.com/">AWS EC2 (us-east-1)</a>
  • <a href="https://status.aws.amazon.com/">AWS EC2 (us-west-2)</a>
  • <a href="https://status.aws.amazon.com/">AWS ELB (us-east-1)</a>
  • <a href="https://status.aws.amazon.com/">AWS Lambda (us-east-1)</a>
  • <a href="https://status.aws.amazon.com/">AWS RDS (us-east-1)</a>
  • <a href="https://aws.amazon.com/cloud9/">Cloud 9 (us-west-2)</a>
  • <a href="https://status.edx.org/">edX</a>
  • <a href="https://www.githubstatus.com/">GitHub Actions</a>
  • <a href="https://www.githubstatus.com/">GitHub API Requests</a>
  • <a href="https://www.githubstatus.com/">GitHub Codespaces</a>
  • <a href="https://www.githubstatus.com/">GitHub Copilot</a>
  • <a href="https://www.githubstatus.com/">GitHub Git Operations</a>
  • <a href="https://www.githubstatus.com/">GitHub Issues</a>
  • <a href="https://www.githubstatus.com/">GitHub Notifications</a>
  • <a href="https://www.githubstatus.com/">GitHub Packages</a>
  • <a href="https://www.githubstatus.com/">GitHub Pages</a>
  • <a href="https://www.githubstatus.com/">GitHub Pull Requests</a>
  • <a href="https://www.githubstatus.com/">GitHub Webhooks</a>
  • <a href="https://status.cloud.google.com/">Google Cloud Platform Google Cloud Networking</a>
  • <a href="https://status.huit.harvard.edu/">HUIT</a>
  • <a href="https://www.netlifystatus.com/">Netlify API</a>
  • <a href="https://www.netlifystatus.com/">Netlify Build Pipeline</a>
  • <a href="https://www.netlifystatus.com/">Netlify Content Distribution Network</a>
  • <a href="https://status.openai.com/">OpenAI API</a>
  • <a href="https://status.python.org/">PyPi</a>
  • <a href="https://status.slack.com/">Slack Connections</a>
  • <a href="https://status.slack.com/">Slack Login</a>
  • <a href="https://status.slack.com/">Slack Messaging</a>
  • <a href="https://status.zapier.com/">Zapier</a>
  • <a href="https://status.zoom.us/">Zoom Meetings</a>
  • <a href="https://status.zoom.us/">Zoom Software</a>

Last 90 days

39 incidents in 48 days tracked · no reported issues 92.7% of the time · typical incident 33 min

Aug 15 Today (UTC)

Recent incidents

Times in UTC

  1. Major outage
     Partial System Outage 15 min
  2. Issue
     Partially Degraded Service 5 min
  3. Issue
     Partially Degraded Service 3 h 35 min
  4. Major outage
     Partially Degraded Service and 2 more 2 h
  5. Issue
     Minor Service Outage 5 min
  6. Major outage
     Partial System Outage 30 min
  7. Issue
     Partially Degraded Service and 1 more 1 h 45 min
  8. Issue
     Partially Degraded Service and 1 more 9 h 50 min
  9. Major outage
     Partial System Outage 5 min
  10. Issue
     Partially Degraded Service 30 min
All incidents on cs50.statuspage.io ↗

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Where this comes from

Stackpulse reads CS50’s official status page at cs50.statuspage.io every 5 minutes and keeps 90 days of what changed. We don’t test CS50 ourselves, so a problem shows here once CS50 reports it.

Stackpulse isn’t affiliated with CS50. Names and logos belong to their owners.

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