Re: Naturally there is a refund...
Latest:
11/19
Issues connecting to Azure resources in Europe, Asia and the Americas regions using Multi-Factor Authentication
Summary of impact: Between 04:39 UTC and approximately 21:30 on 19 Nov 2018, customers in Europe, Asia-Pacific, and the American regions may have experienced difficulties signing into Azure resources, such as Azure Active Directory, when Multi-Factor Authentication (MFA) is required by policy.
Preliminary root cause: Requests from MFA servers to Redis Cache in Europe reached operational threshold causing latency and timeouts. After attempting to fail over traffic to North America this caused a secondary issue where servers became unhealthy and traffic was throttled to handle increased demand.
Mitigation: Engineers deployed a hotfix which eliminated the connection between Azure Identity Multi-Factor Authentication Service and a backend service. Secondly engineers cycled impacted servers which allowed authentication requests to succeed.
Next steps: Engineers will continue to investigate to establish the full root cause and prevent future occurrences. A full Root Cause Analysis will be published in approximately 72 hours. To stay informed on any issues, maintenance events, or advisories, https://www.aka.ms/ash-alerts and you will be notified via your preferred communication channel(s): email, SMS, webhook, etc.
Biting the hand that feeds IT
