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Minimalist, robust and scalable technology

Our proprietary technology is recognised for excellence and innovation within the FX industry

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Technical support

If you run into problems or experience unexpected behaviour with the LMAX Exchange trading platform, please check if you are using one of the browsers listed below. For MS Windows and Mac users, LMAX Exchange recommends using Chrome or Firefox. Please be aware that we do not test against or support MacOS at this time. If your browser is not on the list, please be aware that we may not be able to help you if you encounter problems.

Supported web browsers

We support many browsers, however, we only test against a set of the most popular. At the moment we test the following browsers against the LMAX Exchange trading platform:

  • Chrome on Windows and Linux
  • Firefox on Windows and Linux
  • Microsoft Internet Explorer 9 and above on Windows


If you wish to use charts, you will also need to have installed the latest version of Java.

Initial troubleshooting

If you run into problems with the LMAX Exchange website or trading platform, you should try the following steps first to see if the problem clears itself.

  1. Logout, close browser, log in again.
  2. Clear your cookies, clear your cache (this is known as “delete temporary files” in IE) and restart your browser.

If these do not work, please call the LMAX Exchange helpdesk on +44 20 3192 2555.


At LMAX Exchange we are vigilant in the steps we take to ensure the security of our systems and the details we store on them are secure. It is highly recommended that you take similar action to secure your details while using the LMAX Exchange service. Below you will find some information regarding the security features of the LMAX Exchange web platform.

Secure sessions learn more

When you login to our website you are always in a ‘secure session’ – you can tell this by looking for a padlock at the bottom right hand of your browser and checking that the website address starts with ‘https’. This means the data sent between your computer and our website is encrypted.

We use 128-bit Secure Socket Layer (SSL) encryption – which makes our website very secure. close

Secure log in learn more

Our log in process provides another layer of security. For your safety our trading platform will only accept passwords with a minimum length of 8 characters with a mix of upper and lower case letters and numbers. Please ensure that your password is not the same one as you use on any other online website, is not related to your username or otherwise easily guessable.

To ensure that a high level of security is maintained, please remember that you must not disclose your Username, account details, account number(s), or passwords to anyone. Inform us immediately if you think these may have been disclosed to someone else. close