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Copy file name to clipboardExpand all lines: support/windows-server/active-directory/failure-when-you-use-an-existing-computer-account-to-join-a-domain.md
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@@ -16,11 +16,16 @@ This article addresses the issue of failing to join a computer to a domain when
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## Symptom
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When you try to use an existing computer account name to join a computer to a domain, the operation fails. And you receive the following error messages.
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When you try to use an existing computer account name to join a computer to a domain, the operation fails. And you receive the following error messages:
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:::image type="content" source="media/failure-when-you-use-an-existing-computer-account-to-join-a-domain/an-error-occurs-when-you-join-a-computer-to-a-domain.png" alt-text="An error occurs when you join a computer to a domain." border="false":::
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In the **Access work or school** page:
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> Can't join this domain. Contact your IT admin for more info.
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:::image type="content" source="media/failure-when-you-use-an-existing-computer-account-to-join-a-domain/error-when-you-join-a-computer-to-a-domain-using-system-properties.png" alt-text="Error when you join a computer to a domain using System Properties." border="false":::
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In **System Properties**:
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> The following error occurred attempting to join the domain "\<domain_name\>":
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>
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> An account with the same name exists in Active Directory.
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> Re-using the account was blocked by security policy.
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### Netsetup.log
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@@ -101,9 +106,6 @@ To fix the issue, follow these steps:
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3. Rename the computer and join using a different account that doesn't already exist.
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4. If a trusted security principal owns the existing account, and an administrator wants to reuse the account, use the **Domain controller: Allow computer account re-use during domain join** Group Policy.
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> [!WARNING]
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> Don't use the **NetJoinLegacyAccountReuse** registry workaround anymore in a fully patched environment. Support for the **NetJoinLegacyAccountReuse** registry key was removed by the August 13, 2024 Windows Update. The hardening behavior persists regardless of that registry key setting. Use steps 1 - 4 in this section.
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## Reference
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For more information about domain join hardening changes, see [KB5020276—Netjoin: Domain join hardening changes](https://support.microsoft.com/topic/kb5020276-netjoin-domain-join-hardening-changes-2b65a0f3-1f4c-42ef-ac0f-1caaf421baf8)
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