About this release This document contains important information about the current release. We recommend that you read the whole document. CAUTION: We do not support the automatic upgrade of a pre-release software version. To upgrade to a production release of the software, you must first uninstall the pre-release version. Release date April 24, 2018 Release build McAfee® Endpoint Security 10.5.4.4035 McAfee® Endpoint Security Common 10.5.4.4214 — extension 10.5.4.4029 McAfee® Endpoint Security Threat Prevention 10.5.4.4240 — extension 10.5.4.4070 McAfee® Endpoint Security Firewall 10.5.4.4179 — extension 10.5.4.4053 McAfee® Endpoint Security Web Control 10.5.4.4177 — extension 10.5.4.4026 McAfee® Endpoint Security Adaptive Threat Protection (ATP) 10.5.4.4209 — extension 10.5.4.4044 Endpoint Security Migration Assistant — extension 10.5.4.4041 Endpoint Security Package Designer 10.5.4.4003 This release was developed for use with: Endpoint Security 10.5.x McAfee® ePolicy Orchestrator® (McAfee® ePO™) 5.1.1 and later Purpose This release of McAfee Endpoint Security contains improvements and fixes. We recommend that you verify this update in test and pilot groups before mass deployment. Rating — Critical Mandatory Critical High Priority Recommended Critical for all environments. Failure to apply a Critical update might result in severe business impact. A hotfix for a Severity 1 or Severity 2 issue is considered Critical. For more information, see KB51560.