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Problem:

When KEPServerEX is installed on system running Windows 8 or a higher, not all mapped network drives are available in the open file dialog when a project file is opened by accessing the server Configuration from the Admin Panel. When adding a DSN-enabled channel within the Configure DSN dialog, no error messages are generated when the System DSN tab is accessed. This is caused by new User Account Control changes in newer versions of Windows. For more information, refer to Microsoft article ID: 937624.

Solution:

Access the server Configuration from the Start menu (every time) and open a project file. Mapped network drives are available and an error message is generated when accessing the System DSN tab.