Remove an Office 365 domain name by using PowerShell

Enter the Connect-msolservice command to connect to Office 365, and then enter the user name password

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Enter the Get-msoldomain command to view the domain name used by the existing Office 365

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When you delete a domain name, the domain name cannot be used as a suffix for users and groups

So use Get-msoluser-domainname 365test.top to see if 365test.top has users and groups using this domain name

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Enter a command remove-msoldomain remove a domain name

Fill out the domain name you want to delete at DomainName

Select Yes if you want to continue with this operation, enter Y or press ENTER

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Verify that the domain name is deleted, and then enter the Get-msoldomain command again to see the status of the current domain. There is no enterprise domain name indicates that the domain name has been deleted successfully

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Remove an Office 365 domain name by using PowerShell