
For large directories, this initial one-way sync from Azure AD can take few hours, and up to a day or two. Account isn't synchronized into Azure AD DS yetĭepending on the size of your directory, it may take a while for user accounts and credential hashes to be available in a managed domain. External users can't sign in to the Azure AD DS managed domain.

Azure AD DS can't synchronize in credentials for accounts that are external to the Azure AD tenant.
