Current status: All our ducks are in a row.

What is this site? We monitor the status of and our class sites, and we update here whenever there are interruptions in service.

Friday, January 18, 2013

2013-01-18 - 2013-01-21 - Planned Maintenance

Over this weekend, Coursera will be performing routine maintenance on archived, inactive and upcoming classes. This will involve turning off access to individual course sites (including to new enrollments and access to the class site itself) for up to 15 minutes.

Classes currently ongoing will not be affected by this maintenance. We are sorry for any inconvenience caused.

Monday, January 14, 2013

2012-01-14: Issues Resolved

The issues mentioned before only affected a couple classes. The vast majority of classes were not affected. Everything is operating smoothly now. We apologize for the inconvenience to those students and instructors.

2012-01-14: Site Outage

We are investigating issues. We apologize for the inconvenience.

Saturday, January 12, 2013

2013-01-12 - Shibboleth Access Problems

Due to an configuration problem, university-based users may not be able to authenticate to our systems via Shibboleth authentication systems (e.g. Stanford Weblogin, Rice NetID, etc...). We are working closely with InCommon to address this issue and will post updates as we make progress on this issue.

We are sorry for any inconvenience caused.

[Update 2:46pm - Issue fixed. Huge thanks to the team at InCommon!]

Saturday, January 5, 2013

2013-01-05 - SSL Certificate Changes

Yesterday at 6:30pm, we revoked our old SSL certificate (as it was due to expire), and issued a new one. We quickly updated the SSL certificate used on our two main domains ( and No downtime occurred. Unfortunately, a few auxiliary services were not upgraded to the new SSL certificate. We upgraded these auxiliary services by noon (PST) on Saturday (today). We apologize for the inconvenience.

Wednesday, January 2, 2013

2013-01-02: Planned Database Upgrades

We will be performing preventative maintenance on our databases tonight beginning around 11pm PST. Classes will become unavailable in a rolling window. We expect the maintenance to take around 2 hours. We apologize for the inconvenience. We will post further details here if necessary. Thanks!

Edit: All completed last night. The upgrade was completed within minutes with no disruptions to our services. Thanks for your patience!