URGENT: EA Stopped Opening Trades After MT5 Update - SOLVED

PROBLEM SOLVED - Posting solution for others

Issue: EA compiled fine, no errors in log, but stopped opening any trades after MT5 build 3850 update.

What I tried (didn't work):

• Recompiling EA
• Checking AutoTrading button
• Verifying account permissions
• Reinstalling MT5

SOLUTION: The new MT5 build changed how trade requests are validated. Had to update the EA code:

// OLD CODE (broken):
request.type = ORDER_TYPE_BUY;
request.action = TRADE_ACTION_DEAL;

// NEW CODE (working):
request.action = TRADE_ACTION_DEAL;
request.type = ORDER_TYPE_BUY;
request.type_filling = ORDER_FILLING_FOK; // THIS WAS MISSING!

Adding type_filling fixed it! All trades working normally now.

Hope this helps someone else stuck with the same issue.