How to apply Maintenance Patch 1 for Symantec Client Security 3.1 and Symantec AntiVirus 10.1 Maintenance Release 6
Before you begin: With the use of this patch, you can upgrade only those computers that run Symantec Client Security 3.1.6.x or Symantec AntiVirus 10.1.6.x.
About applying the patch:
The Symantec Client Security patch lets you upgrade your Symantec Client Security clients and servers while preserving their configuration settings. Because of the complexity and size of Symantec Client Security software, applying a patch provides a quicker, less costly, and more efficient method by which to upgrade your clients and servers.
You can use standard installation methods to apply the Symantec Client Security patch, such as local, network, Active Directory, or third-party tools.
WARNING: You cannot uninstall the Symantec Client Security patch once it is installed on your clients and servers. If you need to remove the patch, you must first uninstall the Symantec Client Security client or server, then reinstall the previous Symantec software that does not contain the patch. To avoid this scenario, before you deploy the Symantec Client Security patch, you should install the patch in a test environment and ensure that the patch does not interfere with the normal operation of your computers and network
Download and apply the Symantec Client Security patch You can download the Symantec Client Security patch from a designated FTP Web site. You can apply the patch locally to an individual computer, or you can use Symantec System Center to deploy the patch to managed clients.