MT5 Python error -4: Not found (RES_E_NOT_FOUND)
What you asked for isn't there, for example no history for that symbol and range. The package's own docs call it no history.
-4RES_E_NOT_FOUND
Yes, after a waitSafe to retry?
Not a tradeCould it have executed?
What it means
You see this code in mt5.last_error() in Python, after a package call returns None or False.
-4 means the data or object the call asked for wasn't found. The package documentation describes it briefly as no history.
It doesn't mean the connection is broken. The terminal answered; it just had nothing to give.
Common causes
- Bars or ticks asked for before the terminal has loaded that history.
- A date range with no trading, such as a weekend.
- A symbol that isn't in Market Watch.
- Dates built in local time that miss the broker's server time.
How to fix it
- Call
mt5.symbol_select(symbol, True)first. - Retry after a short wait, so the terminal can load the history.
- Widen the range, and remember the broker's server clock is not UTC.
Example in Python:
import time
import MetaTrader5 as mt5
mt5.symbol_select("GBPJPY", True)
for _ in range(5):
rates = mt5.copy_rates_from_pos("GBPJPY", mt5.TIMEFRAME_H1, 0, 1000)
if rates is not None and len(rates):
break
print("not yet:", mt5.last_error())
time.sleep(1)Is it safe to retry?
Yes, after selecting the symbol or waiting for history to load.
Could the order have executed?
Not a trade. A data lookup, not a trade.
How Tickwire handles it
Broker server time is measured per server and never assumed to be UTC. See time zones.
Related codes
- MT5 error 4401: Requested history not found (ERR_HISTORY_NOT_FOUND)
- MT5 error 4302: Symbol is not selected in Market Watch (ERR_MARKET_NOT_SELECTED)
- MT5 Python error -3: Out of memory (RES_E_NO_MEMORY)
Related MT5 Python functions
- mt5.last_error() in MetaTrader5 Python: find out why the last call failed
- mt5.symbol_info() in MetaTrader5 Python: read a symbol's settings and limits
- mt5.symbol_info_tick() in MetaTrader5 Python: get the latest bid and ask
- mt5.symbol_select() in MetaTrader5 Python: add a symbol to Market Watch
- mt5.market_book_get() in MetaTrader5 Python: read the order book of a symbol
One API for MT4 and MT5
Clear trade outcomes, idempotent orders and an audit log. Read the error reference or the quickstart.