We finaly found it!!!

Remember me?

We have about 25 users with FoxPro DOS 2.6a on a NT4 Server and we had all kind of locking problems plus many unrequested "file access denied".

Well, one user had installed OUTLOOK XP on his station. He uninstalled it and... magic... no more problem!!

So, Al, we are now running without any SHARE command and it works perfectly. I thought you would like to know that. FoxPro manage all locks by itself.

Thanks for your replies.