Hi Yayoi.T
You can use
Update-MgPolicyAuthorizationPolicy -AllowEmailVerifiedUsersToJoinOrganization:$false
and
Update-MgPolicyAuthorizationPolicy -AllowedToSignUpEmailBasedSubscriptions:$false
instead. The Microsoft Graph PowerShell cmdlets equivalents for MSOnline can be found here.
Use the information in this article to plan the migration of your applications to Microsoft Graph PowerShell.
Best Regards,
Ian Xue
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