Cisco Umbrella Outage History

Cisco Umbrella's Zero Trust Access service experienced enrollment issues affecting a limited number of customers attempting new enrollments, while existing connections remained uninterrupted. The incident lasted 2.3 hours, during which the team identified the root cause and implemented mitigation steps. The issue was fully resolved after monitoring confirmed the fix was successful.

Cisco Umbrella/Secure Connect experienced service performance issues in the Chennai and Mumbai regions, causing temporary connectivity delays and intermittent service interruptions for users accessing proxy services. The engineering team investigated and worked to stabilize the environment over a 1.3-hour period. The service performance issues were resolved and all services returned to normal operation.

Cisco Umbrella's Remote Browser Isolation (RBI) service in the Middle East (UAE) data center experienced issues causing "fail open" errors for customers in that region. The problem resulted in traffic not being properly isolated according to configured policies, with unexpected behavior when accessing the RBI service. The issue was resolved after 6.9 hours, with all services returning to normal operation.

Cisco Umbrella's Manchester data center experienced timeouts and slow connections affecting Umbrella and Secure Connect services for 7 minutes. The incident was classified as minor and the team investigated reports of degraded performance. Service was restored after identifying and resolving the underlying connectivity issues.

Cisco Umbrella experienced a partial service degradation in the Vancouver (YVR) region lasting 1.9 hours, causing customers to experience increased latency and intermittent connectivity issues. The engineering team identified the root cause and implemented mitigation steps to restore service. All services returned to normal operation after the issue was resolved.

Cisco Umbrella's sandboxing file scanning service in the Denver region experienced an issue that caused a fail-open condition for customers using Umbrella and Secure Connect services with the optional sandbox feature enabled. The impact was limited to a small subset of customers connected through the Denver EDC. The issue was resolved after 56 minutes with services returning to normal operation.

Due to high load in the FRA1 data center, new Cisco+ Secure Connect VPN connections were temporarily redirected to users' closest configured sites while existing connections remained uninterrupted. The issue was resolved after 1.9 hours when the FRA1 data center was successfully brought back into rotation and began handling new connections normally again.

Cisco Umbrella experienced DNS resolver connectivity issues affecting customers connecting to Middle East data centers for 38 minutes. The service disruption impacted DNS resolution functionality for users in that region. The engineering team resolved the issue and restored normal service operations.

Cisco Umbrella's SWG FQDN service experienced DNS resolution failures affecting customers across multiple regions, preventing access to the service as it could not resolve IP addresses. The incident lasted 32 minutes and was resolved at 05:36 UTC on March 6, 2026, with all services returning to normal operation.

Cisco Umbrella's Data Loss Prevention (DLP) 'AnyDestination' functionality experienced a service degradation for 1.4 hours, causing scanners to fail processing requests and revert to legacy enforcement behavior. This resulted in a 'fail-open' state where policy enforcement was wide open, potentially allowing unrestricted data access. The issue was identified, remediated, and full service functionality was restored with normal operations resuming.