When we upgraded to Windows 10 we started encountering a problem of being able to open a file when it is in use by another user. In the past, we were warned that the file was in use, given the workstation name and user and asked if we wanted to open a copy. We no longer get that warning and are able to work on the file while it is still open on another workstation. The original user is then asked to save the file under a different name or warned that they have exited the file in an unusual fashion. Has anybody else experienced this and is it a Windows 10 issue?
Are you sharing files from a dedicated server? Or, are you sharing files from a computer that is also being used as a workstation?
Are you using mapped drives (i.e. S:\ = \\Server\C-Drive\Symbols) or UNC drives (i.e. \\Server\C-Drive\Symbols)?
In Program Preferences, on the Misc tab, in the Drawing Timer section there is an option Prevent Windows Sleep. You can enable this option to prevent the workstation from going to sleep while a drawing is open. This may help to prevent DataCAD from losing the handle to the file.
Can you reproduce the problem by trying to open a file that is in use within a few minutes of when the first employee opened the file? Or, does the failure only occur after an extended period of time?