You’re backtesting a strategy or analyzing a chart—and suddenly realize that MT4 isn’t showing the full price history. Missing candles, incomplete bars, or blank spots can ruin your analysis and lead to poor trading decisions.
The good news? Restoring historical data in MT4 is straightforward once you know the right steps.
Why Historical Data Goes Missing
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Incomplete installation: MT4 doesn’t always download all historical data by default.
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Corrupted cache: Old or corrupted data files can prevent full loading.
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Deleted symbols: Removing and re-adding symbols may wipe historical prices.
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Broker data limitations: Some brokers only provide limited history for certain instruments.
How to Download and Restore Missing Data
1. Use “Download History” in Chart Properties
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Right-click the chart → Properties → Common → Max Bars in History
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Ensure it’s set to maximum, then click Download History
2. Toggle Timeframes
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Switching between timeframes (M1 → M5 → M1) can trigger MT4 to reload missing bars
3. Clear and Reload History Cache
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Close MT4
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Go to File → Open Data Folder → History and delete temporary files for the symbol
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Reopen MT4 and reload the chart
4. Re-add Symbols if Necessary
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Open Market Watch → Show All
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Remove and re-add the symbol to force MT4 to download full history
Keep Your Data Updated
Accurate historical data is the backbone of backtesting and technical analysis. Regularly check your charts to ensure you have complete history before making trading decisions.
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