Azure Active Directory
An Azure enterprise identity service that provides single sign-on and multi-factor authentication.
This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
I have removed (reimaged) Azure AD Sync server without properly uninstall and unregister Azure AD Sync.
Is it possible to unregister Azure AD Sync for a tenant from azure cloud shell or from Azure portal?
Simply run the Set-MsolDirSyncEnabled cmdlet: https://learn.microsoft.com/en-us/microsoft-365/enterprise/turn-off-directory-synchronization?view=o365-worldwide
Thanks for the answer. Is not ideal, but, I think, is not possible to do this from cloud shell or portal.