MT4 Common Errors Explained: Causes & Fixes for Beginners

Introduction

What is MT4?

MT4 (MetaTrader 4) is a trading platform used by traders worldwide. It is primarily used for foreign exchange (FX) trading and CFD trading, and is characterized by simple operation and high customizability. It is supported by a wide range of users from beginners to professional traders.

Causes and Impact of Errors

However, while MT4 is very convenient, errors can occur. These errors not only affect trading but also become a source of stress for beginners. In particular, common problems called “common errors” can be encountered by anyone.

This article explains the causes and solutions of common errors that are likely to occur in MT4. It explains easy-to-understand steps that even beginners can practice, so use it to resolve troubles during trading.

MT4 Common Error List

Startup-Related Errors

• MT4 does not start
• Freezes during startup
• Cannot log in to the account

Indicator and EA Issues

• Indicator fails to load correctly
• EA (Expert Advisor) does not function

Post-Update Troubles

• Performance slows down after update
• Some settings are reset

Notification and Alert Issues

• Push notifications are not sent
• Alert sounds do not play

Network-Related Errors

• Cannot connect to the server
• Chart data does not update

Causes and Solutions for Each Error

Startup-Related Errors

Causes

• Security software is blocking MT4
• Using an outdated version of MT4

Solutions

1. Check Security Software Settings
   Add MT4 to the security software’s exception list. This increases the likelihood that the platform will function correctly.
2. Install the Latest Version
   Download and install the latest version from the official MT4 website. This may resolve issues present in older versions.

Issues with Notifications and Alerts

Causes

1. Push notifications are not configured.
2. Notification settings on the smartphone or PC are turned off.
3. The alert sound file is corrupted or incorrectly specified.

Solutions

1. If Push Notifications Are Not Received

• Open MT4’s ‘Tools’ → ‘Options’ → ‘Notifications’ tab.
• Check ‘Enable’ and enter the MetaQuotes ID. The MetaQuotes ID can be found in the MT4 smartphone app under ‘Settings’ → ‘Messages’.
• Click the ‘Test’ button to verify that notifications are received.

1. If Alert Sounds Do Not Play

• Open MT4’s ‘Tools’ → ‘Options’ → ‘Events’ tab.
• Select the relevant alert from the event list and ensure ‘Enable’ is checked.
• If necessary, customize the audio file. Supported format is WAV, and any file can be specified.
• Click ‘Test’ to confirm that the alert sound plays correctly.

Network-Related Errors

Causes

1. Connection to the server is unstable or disconnected.
2. Issues with the internet connection in use.
3. The server address is not correctly configured.

Solutions

1. If Unable to Connect to the Server

• Check the ‘Connection Status’ in the lower right corner of MT4. If the connection is interrupted, the server name may be incorrect.
• Click ‘File’ → ‘Login to Trading Account’ and select the correct server. You must use the server name provided by your FX broker.
• Verify that your internet connection is stable, and if unstable, try restarting your router.

1. If Chart Data Is Not Updating

• Right-click the chart and select ‘Refresh’.
• Restart MT4 to resolve any cache issues.

FAQ (Frequently Asked Questions)

Q1: MT4 suddenly crashes and won’t restart. What should I do?

A:

Many causes of MT4 crashes are related to the following issues:

1. Security software interference

• Solution: Add MT4 to the exception list of your security software. This will resolve false detections.

1. Corrupted configuration files

• Solution: Open MT4’s “Data Folder”, delete or backup the configuration files in the config folder, then restart.

Q2: I added a custom indicator to the chart but it doesn’t display. What is the cause?

A:

If a custom indicator does not display, please check the following:

1. Indicator installation location

• Ensure the indicator is correctly saved in MT4’s “MQL4” → “Indicators” folder.

1. Compatibility issues

• Check whether the indicator you are using is compatible with the latest version of MT4. If unsure, contact the indicator developer or refer to the official forum.

1. Check error messages

• Open the ‘Terminal’ window’s ‘Experts’ tab and check if any error messages are displayed.

Q3: Why can’t I change the alert sound?

A:

If you cannot change MT4’s alert sound, try the following steps:

1. Check supported format

• MT4 only supports WAV audio files. Other formats cannot be played.

1. Place in the correct folder

• Save the audio file you want to use in MT4’s “Sounds” folder and specify that file in the event settings.

1. Check for file corruption

• If the file does not play correctly, try a different WAV file.

Q4: I frequently encounter errors that prevent me from connecting to the server. What is the cause?

A:

Server connection errors can be caused by the following:

1. Internet connection issues

• Solution: Ensure your internet connection is stable and perform a speed test.

1. Server setting errors

• Solution: Re-enter the correct server information provided by your FX broker on the MT4 login screen.

1. Temporary server outages

• Solution: Check the server status on your FX broker’s official website or support.

Q5: If chart data does not update, what should I do?

A:

If chart data does not update, try the following solutions:

1. Manual update

• Right-click the chart and select ‘Refresh’.

1. Clear cache

• Go to ‘File’ → ‘Open Data Folder’ → delete the cache data in the ‘history’ folder.

1. Reconnect

• Restart MT4 and reconnect; this may resolve the issue.

How to Prevent Common Errors in Advance

Implement Regular Updates

Key Points:
MT4 receives regular updates. This fixes known bugs and security issues, so we recommend always using the latest version.

Steps:

1. Select MT4’s “Help” → “Check for Updates”.
2. Updates are automatically checked, and the latest version is installed if needed.

Use Reliable Download Sites

Key Points:
When downloading indicators or EAs, obtaining them from unreliable sites may include malicious files or incompatible programs.

Countermeasures:

1. Use official links from the MT4 official site or FX brokers.
2. Scan downloaded files for viruses before using them.

Know How to Back Up and Restore

Key Points:
To prepare for unexpected errors, it’s important to regularly back up MT4 settings and custom files.

Steps:

1. Select “File” → “Open Data Folder”.
2. Copy all files in the folder and save them to external storage or a cloud service.
3. If you need to restore, copy the data back to the same folder.

Ensure Internet Connection Stability

Key Points:
Many MT4 errors stem from unstable internet connections. Ensuring a fast and stable connection can prevent these errors.

Countermeasures:

1. Use a wired connection: wired connections are more stable than Wi‑Fi.
2. Regularly check internet speed: if it’s slow, consult your provider.

Delete Unnecessary Files and Indicators

Key Points:
Unused indicators and EAs can accumulate and slow down MT4. Organize them regularly.

Steps:

1. Select “File” → “Open Data Folder” → check the “Indicators” and “Experts” folders within the “MQL4” folder.
2. Delete unnecessary files.

Summary

Understanding and Addressing Common MT4 Errors

MT4 is an essential tool for trading, but errors can reduce trading efficiency. By understanding and implementing the solutions to the “common errors” explained in this article, you can maintain a smooth trading environment.

Reviewing the Key Points of the Article

1. Common Errors

• We organized errors that many traders experience, such as startup‑related issues, indicator or EA bugs, and network errors.

1. Specific Solutions

• We identified the cause of each error and provided solutions that even beginners can implement.

1. Preventive Measures

• We introduced specific methods to prevent errors, such as regular updates, taking backups, and downloading from trusted sites.

Next Steps

• Bookmark this article
  We recommend saving this article so you can quickly refer to it whenever an error occurs in the future.
• Practice Daily Maintenance
  Perform regular updates and check settings to prevent trouble in advance.
• Leverage Official Support
  If you encounter an error that cannot be resolved, you can obtain prompt assistance by contacting the MT4 official forum or your FX broker’s support.

Message to Readers

You may feel stressed when facing errors, but by understanding the cause and taking the correct action, most problems can be resolved. Use the information in this article to confidently use MT4.

Reference Sites