How to Change Your Mac’s NetBIOS Name

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Are you lookig for an easy way to change the Mac NetBIOS name? If so, you've come to the right place! In this blog post, we'll explain what a NetBIOS name is, why it's important, and how you can easily change it on your Mac.

What is a NetBIOS Name?
NetBIOS stands for Network Basic Input Output System. It is a protocol that is used to identify network devices connected over TCP/IP (Windows). The name must be unique on a network and limited to 16 characters. The last character is reserved for identifying the type of service running or name record type.

Why Change Your Mac's NetBIOS Name?
Changing the NetBIOS name of your Mac can have seveal benefits:
• Improved compatibility with third-party products – By changing the Mac's NetBIOS name, you can make sure that outbound connections to servers use SMB 1 and NetBIOS, which may improve compatibility with certain third-party products.
• Improved – Changing the Mac's NetBIOS name can help prevent malicious attacks by making it harder for attackers to target specific machines on the network.
• Easier identification – If you have multiple Macs in your home or office, giving each one a unique NetBIOS name makes it easier to identify them if you ever need to troubleshoot any issues down the road.

How To Change Your Mac's Name
Changing your Mac's NetBIOS name is actually quie simple:
1. Open System Preferences from your Applications folder or from the Apple Menu at the top of your screen.
2. Select Users & Groups from the System Preferences window.
3. Select Login Options from the list of user accounts in this window and then click Rename… next to “Computer Name:” at the bottom of this window.
4. Enter a new computer (or “NetBIOS”) name and then click OK when prompted for confirmation.

And that's all there is to it! You've now successfully changed your Mac's NetBIOS name! We hope this blog post has been helpful in explaining why it's important and how easy it is to do this on your own machine. Thanks for reading!

How to Change Your Mac's NetBIOS Name 1

What is the NetBIOS Name on a Mac?

NetBIOS name (also known as Computer Name) is a unique identifier for your Mac computer that is used to identify it on a local network. It is a 16-character alphanumeric string that can be set in the Sharing pane of System Preferences. It's important to note that your Mac's NetBIOS name must be unique amongst other computers on the same network. If you have multiple Macs on your network, it is recommended that you give each computer a unique NetBIOS name.

When connecting to cerain networks, such as Windows networks, you may be prompted to enter your Mac's NetBIOS name. This is so the Windows computers can properly identify and communicate with your Mac. Without this information, they won't be able to recognize or connect with your Mac.

The default NetBIOS name for most Macs will usually start with “Mac” followed by some additional letters and numbers, but you can change it to somethig else if needed (as long as it remains unique). To do this, open System Preferences and select Sharing from the View menu. Enter the new name in the Computer Name field and press OK or Save changes when done.

Does Mac Use NetBIOS?

Yes, Mac uses NetBIOS. By default, Mac uses SMB 1 and NetBIOS when making outbound connections to servers in order to improve compatibility with third-party products. When connecting, Mac will frst attempt to use the later versions of SMB (SMB 2 or higher) as well as DNS and port 445. If these fail, then it will fall back to port 139 and SMB 1. This helps ensure that Macs can connect to a variety of server types.

What is NetBIOS?

NetBIOS name is a unique 16-character identifier used to identify network devices over TCP/IP (Windows). It is composed of 15 characters that are used to identify the device and a 16th character reserved for identifying the type of service or name record type running on it. It is important to note that this name must be unique on a network, as it is used to refer to the device in question when sending and receiving data over the network.

Changing the NetBIOS Name

Yes, you can change the NetBIOS name of a computer running any version of the Windows operating system. To do so, open the System Properties window by right-clicking on ‘This PC' (formerly ‘My Computer') and selecting ‘Properties'. In the System Properties window, click on the ‘Computer Name' tab and then click on the ‘Change…' button. Enter your desired NetBIOS name in the box provided and then click on the ‘OK' button to save your changes. After that, other users will see your new NetBIOS name when they look for available computers on the network.

Removing NetBIOS Name on a Mac

Removing the NetBIOS name from your Mac is a fairly straightforward process. First, open the Finder and go to /Library/Preferences/SystemConfiguration/. Inside this folder, you'll find a file called preferences.plist. This file cntains all of your NetBIOS name entries for each network interface. To remove them, delete all of the entries for each network interface by selecting them and pressing the delete key on your keyboard.

Next, you'll need to restart cfprefsd to make sure your changes take effect. To do this, open the Terminal application (found in Applications > Utilities) and type in killall -9 cfprefsd follwed by enter.

Finally, to ensure that no NetBIOS names are beng used on your system, you can enter the following command into the Terminal: sudo defaults delete /Library/Preferences/SystemConfiguration/

Once you've done that, you can restart your Mac to make sure everything is properly configured and that no NetBIOS names are being used on your system.

What is the WINS NetBIOS Name on Mac?

The WINS NetBIOS name on Mac is a unique name that identifies a computer connected to a network. It typically consists of up to 15 characters (including spaces) and can be set explicitly in the System Preferences: System Preferences > Network > Advanced… > WINS > NetBIOS Name. On macOS, the default NetBIOS name is usually derived from the local hostname, but it can be changed to something more descriptive or memorable. It's important to note that all computers on the same network must have a different NetBIOS name.

Is NetBIOS Name Still Relevant?

Yes, NetBIOS name is still used in combination with TCP/IP protocol suite on enterprise networks. This combination is also referred to as NetBIOS over TCP/IP (NBT). While it is only supported on IP version 4 networks and not compatible with the newer IP version 6 protocol stack, it can be a useful tool for sharing resources across a network. NetBIOS name can be used to identify computers and other devices, such as printers, on a network. It can also be used to establish connections between two computers in order to facilitate communication and data transfer.

Comparing NetBIOS and DNS

No, NetBIOS and DNS are not the same. While both technologies are used to identify computers on a network, they do not serve the same purpose.

NetBIOS (Network Basic Input Output System) is an older protocol that is used to allow computers to communicate with each other in a local area network (LAN). It works by assigning a unique name to each computer connected in the LAN, which can be used by other computers in the LAN to locate and connect to that particular computer.

DNS (Domain Name System) is a newer protocol that is used to translate domain names into numerical IP addresses. This allows web browsers and other applications on the to locate web servers and other resources by their domain name instead of having to remember their numerical IP address.

In summary, NetBIOS is used for identifying computers on a local area network whie DNS is used for identifying resources on the Internet.

change mac netbios name

Changing Mac User Names: Why Is It Not Possible?

Your Mac user name is the primary way your computer identifies you and allows you to access your files and settings. Changing your user name can cause a variety of problems, including data loss, incorrect file associations, and disruption of certin services. To ensure the security of your data and the smooth operation of your system, it is not possible to change your Mac user name while logged into that account.

Is Changing the Full Name on a Mac Safe?

Yes, it is safe to change the full name in Mac. Changing your full name will not affect your computer's performance or functionality in any way; it simply chanes how your name appears when you log in or when other people view your account details.

Your full name (also referred to as the user name or display name) is different from your account name (sometimes called the short name). To change your full name, open System Preferences and click on Users & Groups. Select your user from the list of accounts and click on ‘Change Name…' Here you can enter a new full name and click Save. Your new full name will now appear when you log in or whenever someone views details about your account.

Creating a NetBIOS Name

Creating a NetBIOS name is a simple process that can be completed within the Active Directory Users and Computers window. To begin, log into the Active Directory server and navigate to Start > Programs > Active Directory Users and Computers. Right-click the domain name, then select Properties. Under General, you will find the Domain name field. This field displays the existing NetBIOS name. To create a new NetBIOS name, enter a new name in this field and click Apply. The new NetBIOS name will then be created and displayed in the Domain Name field.

Can the NetBIOS Name Differ From the Hostname?

Yes, the NetBIOS name of a Windows computer can be different from its hostname. However, it is not recommended as this can cause confusion and/or errors when attempting to access resources on the LAN. The hostname is used by DNS Servers for name resolution on the Internet and on the LAN, whle the NetBIOS name is only used by WINS Servers on the LAN. In order to change the NetBIOS name, you will need to open up the System Properties window and enter a new name in the Computer Name field.

Removing NetBIOS Name

To remove a NetBIOS name, you'll need to frst go to your Local Area Connection Properties. Right-click on the “Local Area Connection” and select “Properties”. Select the “Internet Protocol Version 4 (TCP/IPv4) option, and click on “Properties”. Once you are in the properties window, click on the “Advanced…” button. In the advanced settings window, click on the “WINS” tab. Then, in the NETBIOS setting section, select the option to Disable NETBIOS over TCP/IP. Click OK to close all of the properties windows. This will remove any existing NetBIOS name associated with your connection.


In conclusion, changing the Mac NetBIOS name is a simple process that can help improve compatibility with third-party products. To do this, you'll need to access your System Settings and rename the account using your administrator name and password. It is important to remember that the NetBIOS name must be unique on a network, limited to 16 characters with 15 characters used for the device name and 16th character reserved for identifying service type or record type. By following these steps, you can ensure your Mac is up-to-date and compatible with all necessary .

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Sanjeev Singh

Sanjeev is the tech editor at DeviceMAG. He has a keen interest in all things technology, and loves to write about the latest developments in the industry. He has a passion for quality-focused journalism and believes in using technology to make people's lives better. He has worked in the tech industry for over 15 years, and has written for some of the biggest tech blogs in the world. Sanjeev is also an avid photographer and loves spending time with his family.