This seems to work with server name and IP address
Just make sure you escape the backslashes in the CLI with a double backslash like

Also, this doesn't work, it's a java limitation.

I put in a check with an error message that tells you to change into an actual shared folder, not the server root.

If the network share requires authentication, you must enter it in Windows Explorer and save it first or execute a "net use" OS command from the shell.

This needs thorough testing as it has affected pretty much every core function in CommandBox that handles file system paths. Also, be careful of performance on network shares. Doing something like "dir **" at the root of a large share might never finish.