This error occurs when a concurrent user attempts to login while all concurrent logins are in use.

To correct this error

•Check if the number of concurrent logins in the GN4 license corresponds to your expectations.

See View the installed license and the GUID for the instructions on how to display the license.

If the number of concurrent logins in the license corresponds to your expectations, and that is the number of users that are logged in, consider to request more concurret licenses.

•Check if there are "dead" logins still listed in the Logged users list.

See Remove 'ghost' entries from the logged users list for instructions on how to free a license by removing ghost users.