Cisco Umbrella incident
[Cisco Secure Connect/ Cisco Umbrella]- Sandboxing Service Issue – Denver Region
Resolved after 53 minutes, affecting SWG and SWG, on March 20, 2026.
The issue has been resolved. Services are operating normally, and functionality has been restored. We’re Here to Help If you have any questions or need assistance, please contact our support team.
Affected components
Update timeline
- investigating Mar 20, 2026, 04:26 PM UTC
We are currently investigating an issue affecting the sandboxing -file scanning service in the Denver region. Customers utilizing Umbrella and Secure Connect services via the Denver EDC, and who have enabled the optional sandbox feature, may encounter a fail-open condition under certain circumstances. The impact is currently expected to be limited to a small subset of customers. Engineers are actively working to identify the root cause, and we will provide updates as more information becomes available.
- monitoring Mar 20, 2026, 05:14 PM UTC
The issue affecting the sandboxing - file scanning service in the Denver region has been mitigated. Services are operating normally, and functionality has been restored. We are continuing to monitor the environment to ensure stability.
- resolved Mar 20, 2026, 05:19 PM UTC
The issue has been resolved. Services are operating normally, and functionality has been restored. We’re Here to Help If you have any questions or need assistance, please contact our support team.
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