Summary
On Thursday, September 15, 2016 at 10:18 AM UTC, internal monitoring detected that customers were unable to sign in to Dynamics AX. Upon investigation, it was discovered that the outage was related to a spike in network traffic. Microsoft engineers applied a network configuration change, restoring service on Thursday, September 15, 2016 at 1:51 PM UTC.
User Experience
Affected users were unable to sign in to Dynamics AX.
Customer Impact
All Dynamics AX customers worldwide
Incident Start Date and Time
Thursday, September 15, 2016, 10:18 AM UTC
Date and Time Service was Restored
Thursday, September 15, 2016, 1:51 PM UTC
Root Cause
A software misconfiguration caused a class of network devices to incorrectly handle a spike in traffic, causing legitimate DNS requests to be identified as malformed.
Next Steps
Set new configurations to bypass the affected network devices
Test, validate, and release software fix for affected network devices