The “Invalid Account” message on a trading application indicates to one of two possible things done wrong in the logging process:

1. Incorrect, or incorrectly typed in, account number
2. Incorrect, or incorrectly typed in, MT4/5 application password (not the Client Office password)

Solution  

If you have correctly typed in your account number and properly selected a trading server, please try by setting a custom MT4 application password first, and then re-doing the logging process by using the newly set password.
  — MT4 custom password can be set in within of your Client Office in less than a minute, here’s how:

Live Accounts
Procedure on how to set a new MT4 application’s password for a Live trading MT4 account:

1. Login to your Client Office
2. Then go to Live Accounts section in Private Office
3. Initiate password reset procedure as per attached screenshot.
4. Check your email inbox (or alternatively junk/spam folder) for password reset email.
5. Follow the link inside received email and set new password for your trading account.

Demo Accounts
Procedure on how to set a new MT4 application password for a Demo trading MT4 account:

1. Login to your Client Office
2. Then go to Demo Accounts section in Private Office 
3. Reset password as per attached screenshot.
4. Check your email inbox (or alternatively junk/spam folder) for password reset email.
5. Follow the link inside received email and set new password for your trading account

The “Invalid Account” message on a trading application indicates to one of two possible things done wrong in the logging process:

1. Incorrect, or incorrectly typed in, account number
2. Incorrect, or incorrectly typed in, MT4/5 application password (not the Client Office password)

Solution  

If you have correctly typed in your account number and properly selected a trading server, please try by setting a custom MT4 application password first, and then re-doing the logging process by using the newly set password.
  — MT4 custom password can be set in within of your Client Office in less than a minute, here’s how:

Live Accounts
Procedure on how to set a new MT4 application’s password for a Live trading MT4 account:

1. Login to your Client Office
2. Then go to Live Accounts section in Private Office
3. Initiate password reset procedure as per attached screenshot.
4. Check your email inbox (or alternatively junk/spam folder) for password reset email.
5. Follow the link inside received email and set new password for your trading account.

Demo Accounts
Procedure on how to set a new MT4 application password for a Demo trading MT4 account:

1. Login to your Client Office
2. Then go to Demo Accounts section in Private Office 
3. Reset password as per attached screenshot.
4. Check your email inbox (or alternatively junk/spam folder) for password reset email.
5. Follow the link inside received email and set new password for your trading account