I have developed a db file (.mde) for use in my hospital. The .mde file will reside on a publicly available server so all employees in the hospital can access the file. The expected number of users in total maybe around 50 but probably no more than 10 at any one time. I have not deployed an .mde file like this before and would really welcome any suggestions of issues I need to be aware of when there are going to be more than one person with the db open at any one time. Does Access block one user from adding records if another is already doing the same automatically or do I need to make preparations myself. Thanks for your comments, Ian.