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MetaTrader error codes / MT5 Python package errors

MT5 Python error -10000: IPC internal error (RES_E_INTERNAL_FAIL)

The link between Python and the terminal failed in a general way. Shut down the connection, start it again, and check the terminal.

-10000RES_E_INTERNAL_FAIL
Yes, after a waitSafe to retry?
MaybeCould it have executed?

What it means

You see this code in mt5.last_error() in Python, after a package call returns None or False.

The package talks to a running terminal through a local channel (IPC). Codes from -10000 to -10005 are about that channel, not about the broker.

-10000 is the general one: something in that channel broke.

Common causes

  • The terminal froze, closed or restarted.
  • Two Python processes using the same terminal at once.
  • A terminal that is still loading.

How to fix it

  • Call mt5.shutdown(), wait a moment, then mt5.initialize() again.
  • Use one Python process per terminal.
  • Restart the terminal if it keeps happening.

Example in Python:

import time
import MetaTrader5 as mt5

def connect(attempts=3, **kw):
    for i in range(attempts):
        if mt5.initialize(**kw):
            return True
        print("initialize failed:", mt5.last_error())
        mt5.shutdown()
        time.sleep(2 * (i + 1))
    return False

Is it safe to retry?

Yes, after reconnecting.

Could the order have executed?

Maybe. If it happened during order_send, check positions and deals before sending again.

How Tickwire handles it

With Tickwire your code calls a REST API from any operating system. You don't install this package or keep a terminal running yourself. See the MT5 Python API page.

All MetaTrader error codes

All MetaTrader5 Python functions

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