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		How LiveUpdate works
		When you start LiveUpdate, it displays a list of the registered Symantec products that are on the computer and establishes the versions and languages of the products to be updated. LiveUpdate then determines the types of updates that are needed, and the order in which to apply the updates.  LiveUpdate finds and connects to either an external Symantec server or an internal Central LiveUpdate server that has been set up by an administrator using the LiveUpdate Administration Utility.  LiveUpdate operates in either Interactive or Express mode. In Interactive mode, LiveUpdate downloads a list of updates available for your Symantec products. You can then choose which updates to install. If you run LiveUpdate in Express mode, LiveUpdate automatically installs all the updates for your Symantec products.

		How clients are updated when using a Symantec LiveUpdate server
		The following steps are performed when a client uses a Symantec LiveUpdate server for its updates: 1  Start up  The LiveUpdate client performs an update check periodically, based on a time interval setting that you define for the client. When LiveUpdate is started on the client, the local Client Product Inventory, which lists all of the Symantec products that are installed on the client, is read. 2  Request Update Indexes  For each Symantec product that is installed, there is an entry in the Client Product Inventory that contains the name of the Update Index file in which the updates are listed. The client collects the Update Index file names and sends a request to the LiveUpdate server for these files to be downloaded to the client. 3 Check Update Indexes  When the Update Index files have been received by the client, the client checks each of the products in the local Client Product Inventory against its index file to see if there are any new updates available for it. If a match is found, the corresponding Update Package is added to the list of updates to retrieve. 4 Update Package Request  After each product in the Client Product Inventory has been checked against its Update Index, the client checks the list of updates. If the list is empty, the LiveUpdate operation is immediately terminated on the client. If there are Update Packages listed, they are automatically downloaded using the default Express mode setting. If Interactive mode is enabled, the client displays the list and prompts the user to select the updates to be downloaded. If the user selects one or more of the updates, a request is sent to the LiveUpdate server for them. If the user declines all of the updates, the LiveUpdate operation is terminated. 5 Update Package Installation  When the Update Packages have been downloaded, the client verifies that the updates match those that were initially requested, and that they have been delivered without modification. Each Update Package is then installed on the local computer. Following the installation,the local Client Product Inventory is updated. 6 Update completion  The update operation is terminated.

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