MT4/MT5: EA disconnected (fix checklist)

Quick answer (most common fix)

1. In MetaTrader, make sure Algo Trading / AutoTrading is ON (green).

2. Make sure the EA is attached to a chart and shows a smiley / running state.

3. In MetaTrader: Tools → Options → Expert Advisors → Allow WebRequest and add: - http://127.0.0.1

4. Keep MetaTrader running while you want copying.

5. In the app, open Accounts and confirm the MT account shows as connected.

Symptoms

• The app shows your MT4/MT5 account as disconnected
• You see a warning like EA disconnected and trades do not copy
• The Trade Copier banner says copying might not be working (for MT links)

Most common causes

• AutoTrading / Algo Trading is OFF
• EA is not attached to a chart (or removed on chart change)
• WebRequest is not enabled for localhost (http://127.0.0.1)
• MetaTrader is closed, frozen, or logged out
• Windows firewall/antivirus blocks local connections (less common)

Fix steps (do this in order)

1) Enable AutoTrading / Algo Trading

In MT4/MT5:

1. Click the AutoTrading / Algo Trading button so it is ON (green).
2. If it immediately turns off again, check you are not in a restricted mode (some brokers/VMs).

2) Attach the EA to a chart

1. Open any chart.
2. Drag the EA onto the chart.
3. In the EA settings, ensure: - “Allow Algo Trading” is enabled - “Allow DLL imports” only if required by your EA (many do not need it)

3) Allow WebRequest to localhost (required)

In MT4/MT5:

1. Go to Tools → Options → Expert Advisors
2. Tick Allow WebRequest for listed URL
3. Add: - http://127.0.0.1
4. Click OK

4) Restart MetaTrader (quick reset)

If it still shows disconnected:

1. Close MT4/MT5 completely
2. Re-open
3. Re-attach the EA to the chart

5) Check Windows firewall/antivirus (if nothing else works)

• Temporarily allow MetaTrader through firewall.
• If you run strict antivirus, whitelist the app and MetaTrader (local traffic only).

Verify it worked

1. In the app, open Accounts and confirm the MT account shows connected.
2. Place a tiny test trade on the master.
3. Open Logs and confirm you see a green copied event.

If it still doesn’t work (Escalate)

1. Open Copy Not Working?
2. Run quick scan
3. Open a support ticket and include: - Whether this is MT4 or MT5 - Broker name + account type (demo/live) - The time it failed (timezone) - A screenshot of the MT chart showing the EA is attached

This article is auto-synced from the Danetrades Copier knowledge base. If something is outdated, please contact support.