I'm locked out from an Access mdb created originally by myself. I get a warning like I can only open it in Read Only because it's opened by someone else at the same time. Is there a way to trace down the user so I can alert him or her to get out of the mdb. I need to resume the right of changing the mdb. If you think there might be other reasons which prevent me from changing the mdb, please advise how I can get rid of the error message.