Backtest Does Not Run
Published Jun 22, 2026 · Updated Sep 6, 2026
Failing or never finishing? Work down the list.
The checklist
Is the template supported?
Use a template supported by Engine Backtest, and check its required parameters. The retired Chat Backtest and code-validation workflow are no longer available.
Try BTCUSDT
Obscure or freshly listed symbols lack history. Verify the strategy on a major first.
Check range and interval
Start before the symbol listed? Window too short? A 4-hour interval over a short window leaves too few candles.
Retry once unchanged
Transient hiccups happen. Retry once before changing anything.
Completed with zero trades does not by itself indicate a failure. The trade count records reductions or closes, so a position may still be open. Check positions, orders, and data warnings before changing the strategy.
Login or permission errors
Sign in again and confirm that you are opening an experiment owned by the current account. Include the error message if access still fails.
Still stuck
Email support@alphafox.app with the experiment or run ID, template, settings (symbol, data source, replay interval, date range, initial equity), and the failure message.