Microsoft Windows regularly releases new operating system versions and supports upgrading an older operating system to the newer release. Examples: upgrading from Windows Vista to Windows 7, or from Windows 7 to Windows 8.

VSE does not support the upgrade of an operating system while VSE is installed, unless VSE 8.8 Patch 6 or later is installed. The operating environments of newer operating system releases are often so different, they require updated files from the product development team to support the new kernel and other features of the new operating system. McAfee Enterprise can't guarantee the safety of the computing environment if VSE Patch 6 or later is not installed before the operating system upgrade. This upgrade scenario is not supported.

1. Before the operating system upgrade, upgrade VSE to Patch 6 or later.
   
   
   Updates are available when you log on to the ServicePortal.
   
   If you are unable to upgrade to VSE 8.8 Patch 6 or later, you must uninstall VSE before you begin any operating system upgrade.
    
2. Perform the operating system upgrade.
3. Install the appropriate VSE release that has been approved to support the later operating system.
   
   For details of all VSE-supported operating systems, see KB51111.