Follow below steps to disable NetBIOS over TCP / NetBT.
1. Go to computer and click manage
2. Click view and choose "Show hidden devices"
3. Expand "Non-Plug and Play Drivers" and find "NetBT"(NetBIOS over TCP).
4. Open "Properties"
5. Stop and disable BetBT service.
6. Click Yes
7. Click to "OK"