How to Install Expert Advisor on MT4 -- Step-by-Step Guide

How do I install an Expert Advisor on MetaTrader 4?

In MetaTrader 4, open File > Open Data Folder, then go into MQL4 > Experts and copy your EA's .ex4 (or .mq4) file there. Restart MT4 or right-click Navigator > Refresh, drag the EA onto a chart, tick 'Allow live trading' in the dialog, and enable the 'AutoTrading' button in the toolbar. A smiley face in the chart's top-right corner confirms the EA is active.

Where do I put the EA file in MT4?

The correct folder is MQL4\Experts inside the MT4 data folder, reached via File > Open Data Folder rather than the Program Files directory. Compiled EAs use .ex4; source files use .mq4 and must be compiled in MetaEditor first. Refresh the Navigator afterwards so the EA shows up under Expert Advisors.

Why isn't my MT4 EA trading after installation?

Check that 'AutoTrading' is enabled in the toolbar (the button should be green and the chart smiley happy), that 'Allow live trading' was ticked when you attached the EA, and that the market is open within the EA's trading hours. Mismatched symbol or timeframe and insufficient margin are also common causes. The Experts and Journal tabs log the specific reason an EA is not placing trades.

How do I enable AutoTrading in MT4?

Click the 'AutoTrading' button in the MT4 toolbar so it turns green, and ensure 'Allow live trading' is ticked in the EA's properties (also under Tools > Options > Expert Advisors). With both enabled, the chart displays a smiling face; a frown or 'no entry' symbol means automated trading is currently blocked.

Can I run an MT5 Expert Advisor on MT4?

No. MT5 EAs are MQL5 .ex5 files and will not load in MetaTrader 4, which needs MQL4 .ex4 files. Use the MT4 build from the vendor, or run the EA on MetaTrader 5 if only an MT5 version exists. Most established vendors provide both versions.

Jelajahi ekosistem

How to Install Expert Advisor on MT4

Step 1: Download the EA File

Step 2: Open MT4 Data Folder

Step 3: Copy the File

Step 4: Restart and Attach

Recommended Products

ZenQ AI EA

Gold Sparrow

CasperIT Adaptive Market Intelligence Trader

EA Izitrade Pro MT4

Hedging positions

AI Market Surfer MT5

Quantum OmniGold

Bohr breakout scalper MT4

Frequently Asked Questions