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. This release includes the following: Package Version McAfee® Active Response Extension/Packages 126.96.36.1997 McAfee Active Response Aggregator 188.8.131.527 Active Response Server 184.108.40.2067 Active Response Client 220.127.116.117 Active Response Workspace 18.104.22.168 Supported platform, environment, and operating system Active Response 2.4.3 supports Windows 10 20H1. Active Response 2.4.3 is compatible with McAfee® Endpoint Security for Linux 10.7.0 and McAfee Endpoint Security for Mac 10.7.0. For the complete list of components, supported platforms, environments, and operating systems for Active Response, see KB84473. Rating — High Priority The rating defines the urgency for installing this update. High priority for all environments. Failure to apply a High Priority update might result in potential business impact. Most updates and hotfixes are considered High Priority.