Installation information Upgrading to this release requires preparation and an understanding of how the upgrade process works. Before beginning the upgrade: Review the upgrade information in the McAfee Enterprise Security Manager Installation Guide. Verify that your current McAfee ESM version is 9.6.x (or later). Note: You can only upgrade to 10.x from 9.6.x or later. Remove Nitro IPS devices from McAfee ESM. Note: You cannot upgrade to 10.x with deprecated Nitro IPS devices. After completing the upgrade Before logging on for the first time, clear your browser cache. Not doing so might cause issues when you log on. If you plan to upgrade to 11.x, upgrade to 11.0.3 (or later).