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iLok License Manager must be configured for automatic discovery of network servers OR a config file needs to be generated by the iLok manager running the license server, and that config file copied to the local machine. In order for automatic discovery to take place, the Bonjour service needs to be running and set to automatic startup. Check that you have the server set for automatic discovery on the systems that won’t launch. Download iLok License Server Administration PDF
https://help.ilok.com/server_configure_server.html
The dialog is accessed via the file>preferences menu in the iLok manager.
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