FortiAppSec Cloud incident
[Service Outage Notice] WAF Scrubbing Region - Azure - Brazil South (Sao Paulo) Scrubbing Servers Down.
Resolved after 2 hours, on November 4, 2026.
Subject: FAS Cloud Service Interruption in Azure Brazil South — 4 November 2026 Cause: The FAS Cloud service interruption was associated with an Azure infrastructure incident affecting part of a single availability zone in the Brazil South region. Azure reported virtual machine disruptions or reboots, connectivity issues, and service availability degradation. During the incident, both FAS load-balancer nodes in the affected cluster became unhealthy and were subsequently found to have restarted. These disruptions affected the availability of the FAS traffic-processing path. The underlying Azure infrastructure root cause remains under investigation. Customer Impact From 20:30 to 22:30 UTC on 4 November 2026, applications served through the affected FAS infrastructure in Azure Brazil South experienced a traffic interruption lasting approximately two hours. Requests through the affected service path could fail or time out. Recovery and Current Status The FAS traffic interruption ended at 22:30 UTC. Subsequent diagnostics confirmed that both affected load-balancer nodes were operational, with all 34 checks passing on each node. We are continuing to review the incident and will provide additional root-cause information when it becomes available from Azure. We apologize for the disruption to your service.
Update timeline
- resolved Nov 04, 2026, 08:00 PM UTC
Subject: FAS Cloud Service Interruption in Azure Brazil South — 4 November 2026 Cause: The FAS Cloud service interruption was associated with an Azure infrastructure incident affecting part of a single availability zone in the Brazil South region. Azure reported virtual machine disruptions or reboots, connectivity issues, and service availability degradation. During the incident, both FAS load-balancer nodes in the affected cluster became unhealthy and were subsequently found to have restarted. These disruptions affected the availability of the FAS traffic-processing path. The underlying Azure infrastructure root cause remains under investigation. Customer Impact From 20:30 to 22:30 UTC on 4 November 2026, applications served through the affected FAS infrastructure in Azure Brazil South experienced a traffic interruption lasting approximately two hours. Requests through the affected service path could fail or time out. Recovery and Current Status The FAS traffic interruption ended at 22:30 UTC. Subsequent diagnostics confirmed that both affected load-balancer nodes were operational, with all 34 checks passing on each node. We are continuing to review the incident and will provide additional root-cause information when it becomes available from Azure. We apologize for the disruption to your service.
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