CS50 Status

Partially Degraded Service

This is CS50's status page, which summarizes which of CS50's services are currently operational. If some service appears to be operational below, but you think that there is, in fact, an outage, please email sysadmins@cs50.harvard.edu with specific details!

For help with any of CS50's assignments, problem sets, or projects, best to post in any of CS50's communities!

api.cs50.io Operational

cdn.cs50.net Operational

certificates.cs50.io Operational

check50 Operational

cli50 Operational

cs50.ai Operational

cs50.courses Operational

cs50.dev Operational

cs50.edx.org Operational

cs50.harvard.edu Operational

cs50.readthedocs.io Operational

cs50.ly Operational

cs50.me Operational

cs50.yale.edu Operational

forms.cs50.io Operational

harvard.cs50.me Operational

help50 Operational

id.cs50.io Operational

manual.cs50.io Operational

render.cs50.io Operational

render50 Operational

style50 Operational

submit.cs50.io Operational

submit50 Operational

time.cs50.io Operational

vault.cs50.io Operational

video.cs50.io Operational

and third-party services... Degraded Performance

Auth0 Management API Operational

Auth0 User Authentication Degraded Performance

AWS EC2 (us-east-1) Operational

AWS EC2 (us-west-2) Operational

AWS ELB (us-east-1) Operational

AWS Lambda (us-east-1) Operational

AWS RDS (us-east-1) Operational

Cloud 9 (us-west-2) Operational

edX Operational

GitHub Actions Operational

GitHub API Requests Operational

GitHub Codespaces Operational

GitHub Copilot Operational

GitHub Git Operations Operational

GitHub Issues Operational

GitHub Notifications Operational

GitHub Packages Operational

GitHub Pages Operational

GitHub Pull Requests Operational

GitHub Webhooks Operational

Google Cloud Platform Google Cloud Networking Operational

HUIT Operational

Netlify API Operational

Netlify Build Pipeline Operational

Netlify Content Distribution Network Operational

OpenAI API Operational

PyPi Operational

Slack Connections Operational

Slack Login Operational

Slack Messaging Operational

Zapier Operational

Zoom Meetings Operational

Zoom Software Operational

Operational

Degraded Performance

Partial Outage

Major Outage

Maintenance

Past Incidents

Aug 21, 2025

No incidents reported today.

Aug 20, 2025

No incidents reported.

Aug 19, 2025

No incidents reported.

Aug 18, 2025

No incidents reported.

Aug 17, 2025

No incidents reported.

Aug 16, 2025

No incidents reported.

Aug 15, 2025

No incidents reported.

Aug 14, 2025

No incidents reported.

Aug 13, 2025

submit.cs50.io Database Maintenance

Completed - The scheduled maintenance has been completed.
Aug 13, 01:58 EDT

Verifying - Verification is currently underway for the maintenance items.
Aug 13, 01:45 EDT

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 13, 01:00 EDT

Scheduled - We will be undergoing scheduled maintenance during this time. Problem set autograding and submissions could be affected during the maintenance window.
Aug 12, 20:07 EDT

Aug 12, 2025

No incidents reported.

Aug 11, 2025

No incidents reported.

Aug 10, 2025

No incidents reported.

Aug 9, 2025

No incidents reported.

Aug 8, 2025

Some users getting ‘Invalid slug’ errors

Resolved - This incident has been resolved.
Aug 8, 21:36 EDT

Update - Some assignment submissions might be affected. We are awaiting a response from our partner service for more details about the issue.
Aug 8, 13:55 EDT

Investigating - We are currently investigating this issue.
Aug 8, 08:45 EDT

Aug 7, 2025

No incidents reported.

CS50 Status Page

Partially Degraded Service

About This Site

Past Incidents