Upgrading involves the following steps. ■ Check the system requirements. ■ Check the accounts you need. ■ Download the installers. ■ Upgrade Enterprise Console (and optionally NAC Manager). ■ Check your existing policies. ■ Upgrade endpoint computers. ■ Upgrade the Compliance Dissolvable Agent (optional). ■ Set up encryption software on endpoint computers (optional)
rather than searching through the site one should start at the Resource and Upgrade Centers (from the Support dropdown menu), in you case the Endpoint Resource Center . Near the top you'll find a link to the general System Requirements page and there under Endpoint Protection the .Enterprise Console (inc. integrated Sophos NAC). Note also the Upgrade Center tab in the Resource Center. As far as specific software requirements (like .NET) are concerned most if it comes with the installer. The built in Upgrade Advisor - which runs at the beginning of the install - will tell you if something's missing which isn't included in the installer.
it is not installed although it is shown in Menu on left side of Console?
the references to NAC are there even if it is not installed, that's correct. Do you intend to use it? The number with the asterisk applies to installation with NAC.
Although the upgrade process doesn't write to the "old" database always back up your database before upgrading. And - you should perform regular backups anyway.
