Software & Apps Windows Naming Windows Workgroups and Domains Avoid peer-to-peer networking issues by Bradley Mitchell Writer An MIT graduate who brings years of technical experience to articles on SEO, computers, and wireless networking. our editorial process LinkedIn Bradley Mitchell Updated on August 09, 2019 Chris Ryan / Getty Images Windows The Ultimate Laptop Buying Guide Tweet Share Email Each Windows computer belongs either to a workgroup or a domain. Home networks and other small LANs utilize workgroups, whereas larger business networks operate with domains. Choosing the proper workgroup or domain names is essential to avoid technical problems when networking Windows computers. Instructions in this article apply to Windows 10. How to Choose a Workgroup or Domain Name Ensure your workgroups or domains are named appropriately according to the following rules. Ensure each workgroup and domain name is no longer than 15 characters.Ensure no workgroup or domain name contains spaces. Windows ME and earlier versions of Windows do not support workgroups or domains with spaces in the name.Whenever possible, ensure all computers on the LAN use the same workgroup or domain name. Using common workgroups and domains makes it easier to browse the network and avoids security complications when sharing files. The default workgroup name in Windows 10 is WORKGROUP but older versions of Windows will vary. Ensure the name of the workgroup or domain is different from the name of any computer on the network.Avoid special characters in workgroup and domain names. Whenever possible, do not use these characters when naming Windows workgroups and domains: / \ * , . " @ : ? < > |For simplicity, avoid using lower-case letters in workgroup or domain names.The workgroup name doesn't need to match the network name (SSID) on a Wi-Fi LAN. How to Create a Workgroup or Domain in Windows To set or change workgroup and domain names in Windows 10: Go to the Windows Start menu and select Settings. In the Find a setting text box, enter System settings and select View advanced system settings. In the System Properties dialog box, select the Computer Name tab. Select Change. In the Workgroup text box, enter a name for the new Workgroup and select OK. In the Computer Name/Domain Changes dialog box, select OK. When prompted to restart the computer to apply changes, select OK. Select Close. Choose to Restart Now or Restart Later.