Run the Uninstall from Add/Remove Programs in the Control Panel.
Dependent on the activation status of the IMan license you may be prompted to deactivate. Either Deactivate or Cancel based on the following scenarios:
Updating IMan to a new Build or Version
Press Cancel
this will leave the existing IMan license installed and may prevent you from obtaining a new serial number from Realisable.
Moving IMan to a Different Server
Press Deactivate
this will remove the existing license from the server & attempt to de-register it with our license server. The same serial number can then be used and re-activated on the new server.