When you open a TestComplete project suite in shared mode, TestComplete creates a .tcNET file in the project suite's folder. This file contains references to user's configuration files. If the file cannot be created for some reason (for instance, if you do not have permission to create files in that folder), this message is displayed. If you still want to open that project suite but not in shared mode, click Yes. If you do not want to open that project suite, click No.