The Symantec Protection Engine installation program checks for previous versions of the product. The results of the check determine what happens next:
No previous version is detected.
A full installation is performed.
Version 5.2, 5.1,is detected.
Symantec Protection Engine supports upgrades from version 5.2 and 5.1. You can select whether to upgrade the product and preserve your existing settings or to perform a clean installation. If you choose to do a clean installation, the installer removes the previous installation, and then installs the new version as a full installation.
Symantec Protection Engine does not support upgrades from version 5.0. To install version 7.0, you must first uninstall version 5.0.
Symantec Protection Engine does not support direct upgrades from version 4.3x. To install version 7.0, you must either uninstall 4.3x or first upgrade to 5.2x and then upgrade to 7.0.
After you install Symantec Protection Engine, activate all applicable licenses. If you upgrade from a previous version that has valid licenses, when the installation is complete, Symantec Protection Engine automatically recognizes these licenses.
Symantec Protection Engine is shipped with the minimum set of URL definitions. If you want to use URL filtering feature, ensure that you run LiveUpdate and get the latest URL definitions before you start URL filtering.
If Symantec Protection Engine fails to start before it can initiate standard logging, information about the failure is written to the abort log file (SymantecProtectionEngineAbortLog.txt). This file is located in the installation directory.
If you need to install or upgrade multiple Symantec Protection Engines on your network, you can use the silent installation or upgrade feature to facilitate the process.