Summary: Fix MT4/MT5 historical data export issues. Follow these steps to get accurate tick, minute, or daily data for EA backtesting and custom analysis.
Step 1: Open History Center
In MT4/MT5, press F2 or click "Tools" -> "History Center". Screenshot: History Center window showing symbol list.
Step 2: Select Symbol and Timeframe
Expand the symbol folder (e.g., EURUSD). Choose timeframe: M1, M5, M15, M30, H1, H4, D1, W1, MN. Screenshot: selected timeframe highlighted.
Step 3: Download or Export Data
Click "Export" button. Choose CSV format (recommended for Excel/backtesting). Save file to your computer. Screenshot: Export dialog with CSV selected.
Step 4: Fix Missing Data (If Any)
If data is missing, select the symbol and timeframe, then click "Download" (MT5) or "Update" (MT4). Wait for completion. Then repeat Step 3. Screenshot: Download button location.
Step 5: Import Data for Custom Backtesting
Use "File" -> "Open Data Folder" -> "bases" -> "tester" -> "history". Place your exported/modified CSV there. Restart MT4/MT5. Your custom data now available.
Reference: MetaQuotes Help Desk - History Center and Data Export.