Please help us to help you by reading and following this thread: Please read before requesting assistance.If you are getting it then there is either 1: a problem with your configuration or installation or hosting configuration, or 2: another user has opened the ticket and is viewing it. You can go to Admin panel -> Settings -> Tickets -> and change "Ticket Auto-lock Time:" to 0. Which should disable ticket locking.Since you haven't given us the information to assist you that's the best answer I can give you.