>I don´t have. My idea is, when a user wants to update a table and that table is being used by another user, I want to know who is the other user and show a message "The user XXXX is using the file" or something like that, but I don´t know how.
Not sure, if this still works, but you may try
Who opened what files on the network? (modified to use only VFP code) FAQ #7896
If it's not broken, fix it until it is.
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