Restrict multiple times user login in AX 2009

Hie,

Currently in Ax 2009 the user can login  multiple times in application, so to restrict users to open Ax 2009  multiple times we can use the following code.

** Before implementing this please take backup of your application files

Open Classes --> info --> StartupPost metod 

and copy following code into this method

void startupPost()

{
// To restrict user login form second login
xSession                    session;
SysClientSessions    SysClientSessions;
UserId                      currentUserId;
int                             counter;

;

currentUserId = curUserId();

if(currentUserId!=”Admin”)                     // Allow Admin User to login multiple time
{
    while select SysClientSessions
    where SysClientSessions.userId == currentUserId  

    && SysClientSessions.Status == 1   // 1 : Login 0 : Logout

    {
        session = new xSession(SysClientSessions.SessionId, true);

        if (session && session.userId())
        {
              counter++;
        }
    }

    if(counter>=2)
    {
         Box::stop(“Already Logged-in : The same user id can’t log in twice.”);
         infolog.shutDown(true);
     }
}
}