If anyone has dealt alot with Access security - please help. We have multiple Access databases at teh comapny where I work, and we added Security to them through Access as we didn't want to do it at the NT level. I set up three groups plus the Admin group, Project Designer, Read-Only, and Full Data. On one of the databases, it is locking everyone out when someone has it open. I thought this was originally because she was a project designer, but when I changed it, it had no effect. Can anyone explain this to me? How come more than opne person isn't allowed in this database?