Microsoft 365 Services
Incident Report for AppRiver
User Impact: Users may be unable to access your environment.

SUMMARY OF IMPACT: Between approximately 21:30 UTC and 22:30 UTC on 01 Apr 2021, customers may have experienced intermittent issues accessing Microsoft services, including Azure, Dynamics, and Xbox Live.

Preliminary Root Cause: We are continuing to investigate the underlying cause for the DNS outage but we have observed that Microsoft DNS servers saw a spike in DNS traffic.

MITIGATION: Microsoft engaged resilient DNS capabilities to absorb the spike in DNS traffic.

Next Steps: We apologize for the impact caused by this outage. We are continuing to investigate to establish the full root cause.
A Post Incident Report will be published within five business days.
Posted Apr 01, 2021 - 19:56 CDT
Microsoft is investigating an issue in which users may be unable to access some services and features. We’ll provide additional information as soon as possible.
Posted Apr 01, 2021 - 16:52 CDT
This incident affected: Office 365.