No, users will not have to reenroll any authenticators when you perform an upgrade of Windows Server and migrate services like Remote Desktop Services.
Rublon identifies users by usernames, so if your users' usernames do not change during the migration, then the migration will not affect Rublon MFA on users' ends.
You can define username aliases for every user, which will help keep user authenticators intact if a user's username changes during the process.
Helpful Links
How to add, edit, and delete user aliases - Rublon Admin Console
Was this article helpful?
That’s Great!
Thank you for your feedback
Sorry! We couldn't be helpful
Thank you for your feedback
Feedback sent
We appreciate your effort and will try to fix the article