Dear Roberto,
Thanks for your reply. According to my own knowledge, in a normal situation, the following pop-up window appears after choosing a connection. It should appear every single time when I log on to the model.
However, this pop-up window no longer appear. I can log on to the connecetion, for example as USER_1, automatically after choosing the connection. I have tried to log off and log on again but there is no pop-up window that asking me about user name and password. This makes me cannot switch from one user to another user.
What should I do to make the above logon screen reappear?
Regards,
Ivan