>> Once included in a project, you can change it to read only. I believe that'd do it.
>
>> in a project, you can change it to read only.
>You mean change exclude to include?
>
>But I don't understand. I have many applications used by many people and it's the first time I got "File Access Denied" on a foxuser.dbf file.
>Why should I change file's property to read only?

What version of VFP? Prior to VFP7, FOXUSER.DBF was single user. It can now be shared.