Summary: This guide covers three proven methods to install any Expert Advisor (EA) on MT4. Includes file placement, enabling automated trading, and solving the most common installation issues.
Step 1: Locate Your EA File
EAs usually come as .ex4 or .mq4 files. If you received a .zip or .rar archive, extract it first. Remember the folder where you saved the file. Screenshot: Windows File Explorer showing an .ex4 EA file.
Step 2: Method 1 – Install via MetaEditor (Recommended)
Open MT4. Click “File” → “Open Data Folder” → open the “MQL4” folder → open the “Experts” folder. Copy your .ex4 or .mq4 file into this “Experts” folder. Screenshot: Data Folder path showing Experts folder highlighted.
Step 3: Restart or Refresh MT4
Close and reopen MT4. Alternatively, right-click inside the Navigator window (Ctrl+N) and select “Refresh”. Your EA will now appear in the Navigator under “Expert Advisors”. Screenshot: Navigator window showing newly added EA.
Step 4: Method 2 – Drag and Drop (Simplest)
In MT4, open the Navigator window (Ctrl+N). Find your EA file on your computer desktop. Drag the file directly from your desktop into the Navigator window. MT4 will automatically copy it to the correct folder. Screenshot: Dragging an EA file from desktop into Navigator.
Step 5: Method 3 – Attach EA to a Chart
From the Navigator window, drag the EA onto any chart. A settings window will pop up. Click the “Common” tab, check “Allow Automated Trading”, and also check “Allow DLL imports” if your EA requires it. Click “OK”. Screenshot: EA settings window with Common tab options checked.
Step 6: Enable Auto-Trading Button
Look for the “Auto-Trading” button on the MT4 toolbar (it looks like a blue play button). Make sure it is green (pressed down). If it is red, click it once to enable automated trading. A smiley face on your chart means the EA is running. Screenshot: MT4 toolbar with green Auto-Trading button.
Reference: MetaQuotes Help Desk - Installing Expert Advisors.