Private Service Edge (PSE) – Intermittent Traffic Blocking for Explicit Proxy Traffic

Zscaler is aware of and actively investigating an issue impacting a subset of customers using Private Service Edge (PSE). Some customers are experiencing intermittent traffic blocking when accessing websites through PSE. Affected requests may return the error: "Web Application Blocked by Firewall Rule."We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Latest Update - Sat, 04 Apr 2026 18:32:37 UTCZscaler has identified the issue and is actively working on mitigation steps to restore expected traffic handling behavior within the data plane.Update - Sat, 04 Apr 2026 18:32:37 UTCZscaler has identified the issue and is actively working on mitigation steps to restore expected traffic handling behavior within the data plane.