Current Status: Engineers have implemented a Domain Name System (DNS) configuration modification to solve the problem and are performing validations to ensure impact has been remediated.
User Experience: Affected users are unable to access the Yammer service from China. As a workaround, users can attempt to connect to the service using Windows Phone, Android, or iOS apps.
Customer Impact: Customer impact appears to be limited at this time. Engineers have identified that impact is limited to users connecting from China.
Preliminary Root Cause: A third-party Content Delivery Network (CDN) used to serve static page assets was inaccessible.
Next Update by: Friday, April 10, 2015, at 5:30 PM UTC