If I remember correctly, MS-DOS uses NetBIOS for things like File Sharing. You might need to force that on in Windows 10.
Looks to be Available via:
Network and Sharing Center, Properties on the appropriate adapter, "Internet Protocol Version 4" in the list, then Properties- In the dialog, click Advanced, and on the WINS tab there are a set of option buttons to configure NetBIOS. You probably want 'Enable NetBIOS over TCP/IP"