Hi @kkrp1,
To check for Microsoft social connection logins, please use windowslive.
I’d recommend creating an action as described above as it would block logins from those users with the affected connection.strategy. You could remove the users that get denied access but created in Auth0. Please see this doc on bulk deleting users: Bulk Update or Delete Users
Please let me know if you have any additional questions!
Best,
Mary Beth