The ProxySG performs connections once every 30 days to check for new license authorizations and 31 days before the license is to expire, the automatic license update feature allows the ProxySG to contact the Blue Coat licensing server.
If a new license has been purchased and authorized, the license is automatically downloaded. If a new license is not available on the Web site, the ProxySG continues to contact the Web site daily for a new license until the current license expires.
Outside the above license expiration window, the appliance makes this connection once every 30 days to check for new license authorizations. This feature is enabled by default.
To configure the license auto-update: