Problem with mail configuration in Outlook365

I have a problem with mail configuration in Outlook365, the client version. I deal with two distinctive domains. Now, I am moving a mailbox from one domain to another through data migration. I got credentials right but Office365 still won’t allow it. OWA is working fine and I even added registry value EnableADAL = 0. Can someone provide me with a solution to my problem? Thanks a lot in advance!

Hi @Hughes,

I would like to solve your issue I understand your question But if you are not bothered can you please share the error image with me so that I can find the exact reason for the issue?

Please follow the below link