How to Join a Domain on a Windows Computer or Mac

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Add your computer to an Active Directory domain with this quick guide
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Do you need to connect a computer or server to your organization's Active Directory domain? To join a domain on Windows 10, Windows 11, and earlier, you'll need to have the Pro, Education, or Enterprise edition version of the operating system. On a Mac, you can join a domain using the Directory Utility tool. This wikiHow guide will teach you how to join a computer to a domain in a few simple steps.

How to Join Domain Win10

In Windows, join a domain in System Properties (sysdm.cpl) > Change > Domain. On a Mac, go to Directory Utility > Services and select Active Directory > to add the domain information.

Method 1
Method 1 of 2:

Using Windows

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  1. You can do this on any version of Windows, including Windows 11 and Windows 10, from the Windows search bar. Here's how:
    • Click the magnifying glass or search bar at the bottom of the screen or press the Windows key on your keyboard.
    • Type sysdm.cpl and press Enter .
    • The System Properties panel will automatically open to the Computer Name tab.
  2. You will find this button in the lower-right corner. [1]
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  3. You will find this option below the "Member of" heading at the bottom of the pop-up window.
    • If this option is grayed out, your version of Windows is not able to join a domain. You will need Pro, Enterprise, Education, or Ultimate (if using Windows 7 and earlier) to join a domain.
  4. Type the hostname of the domain you want to join in the "Domain" field. [2]
  5. This will save the domain address.
  6. When prompted, you'll need to provide the username and password of an account that has permission to join the domain. If you're not sure which account to use, contact your domain's administrator.
  7. Once you join the domain, you'll see a welcome message. After that, you'll be prompted to restart your computer to apply the changes. Your computer will automatically connect to the specified domain after you restart. [3]
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Method 2
Method 2 of 2:

Using a Mac

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  1. If you need to join a Mac to an AD domain, you can do so in Directory Services. To get there, just type directory utility into Spotlight search, then click Directory Utility in the search results. [4]
  2. It's at the top of the window.
  3. You will need to unlock Directory Utility with your administrator-level account (or use Touch ID) to join a domain. [5]
  4. This allows you to edit your Active Directory domain settings.
  5. If you're not sure what to enter here, contact your network administrator.
  6. By default, your Mac will be identified by its regular host name. If you want to use a different hostname for the Active Directory domain, enter it into the "Computer ID" field. There are two situations in which you might need or want to use a computer ID:
    • If your organization has specific host naming conventions and you don't want to change your Mac's actual name.
    • If your Mac's hostname contains a hyphen, you won't be able to bind to a domain. In this case, enter a new computer ID that doesn't have a hyphen.
  7. If you need to make additional changes, you can click the triangle next to "Show Options" to expand more options.
    • On the User Experience panel, you can set up mobile user accounts, home folders, and more.
    • On the Mappings panel, you can map group IDs and user IDs to Active Directory attributes. [6]
    • On the Administrative panel, you can set this domain as your preferred controller, control whether AD admins have admin privileges on your Mac, and choose which domain users can connect to your Mac at all.
  8. You'll then be prompted to enter additional information.
  9. On this screen, you'll need to enter:
    • The username and password of an Active Directory account that has permission to join a computer to a domain.
    • The computer's OU (organizational unit).
    • Choose whether you want to add Active Directory to the Mac's authentication and contacts search policies.
    • Once you click OK , this will confirm the domain information and add your Mac to the domain.
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Expert Q&A

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  • Question
    How do you add a computer to a domain in Windows 8?
    Stan Kats
    Professional Technologist
    Stan Kats is a Professional Technologist and the COO and Chief Technologist for The STG IT Consulting Group in West Hollywood, California. Stan provides comprehensive technology solutions to businesses through managed IT services, and for individuals through his consumer service business, Stan's Tech Garage. Stan holds a BA in International Relations from The University of Southern California. He began his career working in the Fortune 500 IT world. Stan founded his companies to offer an enterprise-level of expertise for small businesses and individuals.
    Stan Kats
    Professional Technologist
    Expert Answer
    Unfortunately, you can't do this in Windows 8. It has to be Windows 10 pro or enterprise.
    Thanks! We're glad this was helpful.
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  • Question
    Can a domain user join a computer to the domain?
    Stan Kats
    Professional Technologist
    Stan Kats is a Professional Technologist and the COO and Chief Technologist for The STG IT Consulting Group in West Hollywood, California. Stan provides comprehensive technology solutions to businesses through managed IT services, and for individuals through his consumer service business, Stan's Tech Garage. Stan holds a BA in International Relations from The University of Southern California. He began his career working in the Fortune 500 IT world. Stan founded his companies to offer an enterprise-level of expertise for small businesses and individuals.
    Stan Kats
    Professional Technologist
    Expert Answer
    It depends on the user's permissions. If the account on the computer has authorization, they'll be able to doo it. If they don't, they won't be able to.
    Thanks! We're glad this was helpful.
    Thank you for your feedback.
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    Not Helpful 2 Helpful 0
  • Question
    How do I prevent others from joining a computer to a domain?
    Stan Kats
    Professional Technologist
    Stan Kats is a Professional Technologist and the COO and Chief Technologist for The STG IT Consulting Group in West Hollywood, California. Stan provides comprehensive technology solutions to businesses through managed IT services, and for individuals through his consumer service business, Stan's Tech Garage. Stan holds a BA in International Relations from The University of Southern California. He began his career working in the Fortune 500 IT world. Stan founded his companies to offer an enterprise-level of expertise for small businesses and individuals.
    Stan Kats
    Professional Technologist
    Expert Answer
    The user that's trying to join the domain will need permission to join. So long as you haven't changed the settings to allow any computer to join, this shouldn't be a problem.
    Thanks! We're glad this was helpful.
    Thank you for your feedback.
    If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
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      References

      1. ↑ Stan Kats. Cybersecurity Expert. Expert Interview. 24 June 2021.
      2. ↑ Stan Kats. Cybersecurity Expert. Expert Interview. 24 June 2021.
      3. ↑ Stan Kats. Cybersecurity Expert. Expert Interview. 24 June 2021.
      4. ↑ https://support.apple.com/guide/directory-utility/open-directory-utility-diru75d3eaa7/mac
      5. ↑ https://support.apple.com/guide/directory-utility/configure-domain-access-diru11f4f748/mac
      6. ↑ https://support.apple.com/guide/directory-utility/map-group-primary-gid-uid-active-directory-diru0f42005a/6.3/mac/13.0

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