yes i did run several platform in several computers, but they all connect to TWS with different client ID, the other three paralleled running platform has no issue at all, but two MC (again, each platform i assigned different client ID) i have issue with getting history data, but no issue to get cur...

You need to elaborate more: - have you enabled activeX sockets and allowed trusted IPs from the IB TWS config? - are you sure you are connected to IB? menu File | Broker Profiles - have you added IB symbols through the quote manager? - what type of data are you trying to get? volume, time, tick, an...

i have all my setting done correctly, but i still can't get historical data but only data from the time i connected. btw, i use a different trading platform at same time which could get historical data correctly. very strange.

while getting futures data from zenfire has no issue, but i can't get historical data from IB, even for the minute data. any solution?