@Dirk Manderin They can login but you need to understand that this is not the best security practice. Under the circumstances, if you must do it, you can enable the cached logon for windows where the users can login to the machine using the cached credential without the need to a DC to authentication.
Read more about it here : https://learn.microsoft.com/en-US/troubleshoot/windows-server/user-profiles-and-logon/cached-domain-logon-information
Things might break if there is a password reset scenario.