How to Fix “XYZ is not a valid username” in DirectAdmin

If you get “XYZ is not a valid username” error when you restore an account in Directadmin Panel, the solution is very simple. You need the increase of max_username_length parameter’s value in the directadmin.conf file.

This problem can show up when migrating accounts from one server to another one.

To solve this problem, just follow the steps;

• Connect to SSH with your root credentials.
• Run this command to edit the related file.

nano /usr/local/directadmin/conf/directadmin.conf

•  Then increase username length up to 20, 30 or so on.

max_username_length=20

• You should then restart the DirectAdmin service.

service directadmin restart

You can continue to restore accounts after applying this solution.