How to Enable or Disable NetBIOS Over TCP/IP on Windows 10 - Windows Basics

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Friday, May 21, 2021

How to Enable or Disable NetBIOS Over TCP/IP on Windows 10

NetBIOS or Network Basic Input/Output System is an API used in Windows where DNS is not available. Even when it runs, it runs over TCP/IP. It's a fallback method and it's not enabled by default. NetBIOS has its own security concerns. While Windows has made sure it's not enabled by default if you want to double check, follow this guide to learn how to enable or disable NetBIOS over TCP/IP on Windows 10.

Enable or disable NetBIOS over TCP/IP on Windows 10

  1. Press the Start key, and then type Control Panel. When it appears, click to open it.
  2. In Control Panel, click Network and Sharing Center.
  3. Then, in the left pane, select Change adapter settings.
  4. Select Local Area Connection or whatever your connection name is and right click on Properties.
  5. Select Internet Protocol Version 4 (TCP/IPv4).
  6. Next, click the Advanced button, then in the new settings box, select the WIN tab.
  7. Select Disable NetBIOS over TCP/IP.
  8. Click Apply and exit.

You will not have to restart your computer unless prompted by the operating system.

Turn off NetBIOS on the DHCP server

  1. Click the Start button > Programs > Administrative Tools, and then select DHCP.
  2. In the navigation pane, expand server_name, expand Scopes, right-click Scope Options, and select Configuration Options.
  3. Select the Advanced tab, and then select Server Name Options in the Provider class list.
  4. Make sure that Default User Class is selected in the User Class list.
  5. Select the check box 001 Microsoft Disable Netbios Option in the Available Options column.
  6. In the Data Entry area, enter 0x2 in the Long box, and then select OK. 

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