Step 1: Download the EA File
After purchasing, download the .ex4 file. Save it to an accessible location on your computer.
Step 2: Open MT4 Data Folder
In MetaTrader 4, go to File > Open Data Folder. Navigate to MQL4 > Experts folder.
Step 3: Copy the File
Copy your .ex4 file into the MQL4/Experts folder. Copy any additional .dll or .set files to their respective folders.
Step 4: Restart and Attach
Restart MT4 or refresh the Navigator. Drag the EA onto a chart, enable 'Allow live trading' in settings, and click OK. Enable AutoTrading from the toolbar.
Frequently Asked Questions
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.
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What is an Expert Advisor? Complete GuideEverything a trader needs to know about Expert Advisors on MetaTrader — definitions, types, how they work, risks.