SHUT (purple light) means that some serious problem occurred and the plugin will not attempt to reconnect immediately. + IB API error message 165 is employed now to detect Every time backfill is obtainable or not (demo account by way of example isn't going to offer you backfill) From https://messiahcecax.wizzardsblog.com/28925512/the-best-side-of-data-feed-for-amibroker