Hi @Lakhan Shrivastav , yes, you can use the loginHint
parameter to prepopulate the username/email address field of the sign-in page for the user if you know their username ahead of time. This is often used during reauthentication, having already extracted the username from a previous sign-in using the preferred_username
claim.
Please let me know if you have any questions and I can help you further.
If this answer helps you please mark "Accept Answer" so other users can reference it.
Thank you,
James