Upgrading the SolidNetWork License Manager - SOLIDWORKS
https://my.solidworks.com/reader/onlinehelp/2021%252Fenglish%252Finstallation%252Finstall_guide%252Ft_upgrading_lic_mgr.htm/upgrading-the-solidnetwork-license-manager
WebStart SolidNetWork License Manager ( Start > Programs > SOLIDWORKS version > SolidNetWork License Manager > SolidNetWork License Manager ). On the License Usage tab, verify that no client computers on the network are running SOLIDWORKS. Uninstall the old license manager. For details, see Uninstalling the SolidNetWork License Manager.
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