MT5 error 10026: Autotrading disabled by server

Nothing in the EA can turn it back on.

Updated 22 October 2026. Runs in your browser; nothing you type is uploaded.

Return code or words from the message

The number after retcode= in MT5's Experts or Journal tab. 41 codes, as MQL5's reference words them.

10026

TRADE_RETCODE_SERVER_DISABLES_AT

Autotrading disabled by server

Cause and fix for 10026

What MQL5 says

10026 TRADE_RETCODE_SERVER_DISABLES_AT: Autotrading disabled by server

From MQL5's table of trade server return codes, read 22 October 2026. An Expert Advisor finds it in MqlTradeResult.retcode; the Experts and Journal tabs print it.

What causes it

The broker or prop firm has switched off automated trading on this account; ask them why (a breached or read-only account is a common reason).

The fix in MQL5

Nothing in the EA can turn it back on. Check ACCOUNT_TRADE_EXPERT at start-up so the EA says so instead of failing order by order.

Before

#include <Trade/Trade.mqh>
CTrade trade;

void OnTick()
  {
   trade.Buy(0.10, _Symbol);
  }

After

#include <Trade/Trade.mqh>
CTrade trade;

int OnInit()
  {
   if(!AccountInfoInteger(ACCOUNT_TRADE_EXPERT))
      Print("Automated trading is forbidden for account ", AccountInfoInteger(ACCOUNT_LOGIN), " by the trade server");
   return(INIT_SUCCEEDED);
  }

void OnTick()
  {
   if(AccountInfoInteger(ACCOUNT_TRADE_EXPERT))
      trade.Buy(0.10, _Symbol);
  }

Both compile in MetaEditor 5 with no errors or warnings. Adapt them to your EA; they were not run against a trade server.

Other MT5 errors

Method and privacy

Method: The constant and the description are MQL5's reference table of trade server return codes, read 22 October 2026. The MQL5 code compiles in MetaEditor 5 with no errors or warnings; it is an example to adapt and was not run against a trade server.

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Limits and trading risk

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