Synchronize the WSUS 3.0 Server
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2, Windows Server 2008, Windows Server Update Services
After you select products and update classifications, you are ready to synchronize WSUS. The synchronization process involves downloading updates from Microsoft Update or another WSUS server. WSUS determines if any new updates have been made available since the last time you synchronized. If this is the first time you are synchronizing the WSUS server, all of the metadata for updates in the product categories and classifications that you have selected are synchronized to your WSUS server.
The first synchronization on a WSUS server will generally take a long time. You will not be able to make changes to the server's update filters (products, classifications, languages) while the server is being synchronized.
To synchronize the WSUS server
In the WSUS Administration console, click the Synchronizations node.
In the Actions pane, click Synchronize Now.
After the synchronization finishes, you can click Updates in the tree view for this server to view the list of updates.