Most often You will need to very first repair the condition that induced this state after which you can reconnect manually employing plugin context menu described under. Alternativelly you are able to just restart AmiBroker. In case your data source would not present all fields you can make given https://amibroker-data-feed18629.blogoscience.com/34009673/the-2-minute-rule-for-amibroker-data-feed