What should you do first when preparing for an upgrade to a new CounterACT version?

Consulting the official Release Notes is the mandatory first step when preparing for any software upgrade, including Forescout CounterACT. This document is the authoritative source for critical planning information. It contains the supported upgrade paths, hardware and software prerequisites, new features, resolved and known issues, and detailed procedural changes. Overlooking this step can lead to failed upgrades, unexpected behavior, or unsupported configurations. All other actions, such as the sequence of appliance upgrades or the specific commands to use, are dictated by the information found within the Release Notes.

A. The standard procedure is to upgrade the Enterprise Manager (EM) before upgrading the managed appliances to maintain compatibility and control.

B. The Options > Modules section is for managing individual plugins, not for upgrading the core CounterACT appliance operating system and software.

C. This is a CLI command to execute the upgrade. It is an action taken during the upgrade process, not the first step in preparation.

E. Determining module compatibility is a crucial part of the process, but this information is found by first consulting the Release Notes and other official documentation.

1. Forescout Platform and Base Modules Upgrade Guide, Version 8.4.3, Page 10, Section: "Before You Begin".

The document explicitly states: "Before you begin the upgrade, it is essential to read the Release Notes for the version to which you are upgrading. The Release Notes contain important information about new features, known issues, and specific upgrade considerations."

2. Forescout Platform and Base Modules Upgrade Guide, Version 8.4.3, Page 11, Section: "Upgrade Sequence".

This section confirms the correct upgrade order, refuting option A: "In a multi-Appliance deployment, always upgrade the Enterprise Manager before you upgrade the Appliances that it manages."

3. Forescout Administration Guide, Version 8.4.3, Page 781, Section: "Upgrading Forescout Software".

This guide details the methods for upgrading, which include using the Console (Options > Upgrades) or the CLI, confirming that the method described in option B is incorrect for a core platform upgrade.