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Instructions for Windows Vista, 2000 and XP
Open the control panel
Open Administrative Tools
Open Services
Locate the item SIMetrix-SIMPLIS License Manager. If this is not present, look instead for Flexlm License Manager (the name used for earlier service installers)
Select the item then menu Action. Select Start or Stop as appropriate. You may get an error message when stopping the service. This can be ignored.
Instructions for Windows NT4
Open the control panel
Open Services
Locate the item FLEXlm License Manager. This is the default name for the SIMetrix license manger, but it's possible that it may have another name such as SIMetrix License Manager.