When you upgrade the SolidWorks software, Toolbox is upgraded if parts have been added. If the Toolbox root folder is in an Enterprise PDM vault, before you start the SolidWorks upgrade, you must prepare the Toolbox folder.
On the first system to perform the upgrade, you must check out the Toolbox database and use Get Latest Version to download the Toolbox files to the local cache. On other systems that are upgraded, the only requirement is to download the Toolbox files.