Error Code 2008 [verified]: Sentinelone

[Signature] Director, Security Operations April 14, 2026

S1-ERR-2008-2026-04-14 Date: April 14, 2026 Prepared By: Security Operations Center (SOC) Severity Level: Medium-High Affected Systems: Endpoints running SentinelOne Agent (versions 22.x and 23.x) 1. Executive Summary This report documents the occurrence, root cause analysis, and remediation steps for SentinelOne Error Code 2008 . This error typically indicates a failure in the agent’s ability to establish a secure WebSocket connection with the SentinelOne Management Console. Over the past 72 hours, 142 endpoints across three subnets have intermittently reported this error, leading to delayed threat detection reporting and partial loss of remote visibility. No data loss or breach occurred, but response times for real-time commands (e.g., isolate, fetch logs) increased by an average of 11 minutes. 2. Error Description Error Code: 2008 Display Message: "Agent unable to establish real-time channel. WebSocket handshake failed. Check network and proxy settings." Observed Log Entry (from SentinelOneAgent.log ): [ERROR] [WebSocketManager] Code 2008: TLS handshake timeout after 30s. Endpoint ID: <UUID>, Console: [tenant].sentinelone.net, Proxy: proxy.corp.local:8080. sentinelone error code 2008