I have two application, one is developed in VB,another one is developed in Asp. these two application want to use the same access2000 database at the same time. on the windowNT platform,everything is fine. But on the windows2000 when I opened the application developed in VB, and then try to open another application developed in Asp, when it connected to the database,(cn.open DSNname) it displayed the error message " unknown error ,file in use.....". the application developed in ASp can&#039;t work. After I closed the vb application, everything is fine. <BR>Please help me, what&#039;s the problem on the windows2000? thank you!<BR>