Unable to retrieve domain list for O365

Hello Community,

I had installed Quest MNE 4.16.2.74 to migrate from Domino 10.x to O365. Pre-requisite check is showing all check as green/pass, however while doing the configuration and providing the credentials in Exchange Server (Office 365) section the domain list is not getting retrieve and displaying error - Unable to get hosted domains. Please check the administrator user name and password.
Credentials are checked, tested / verified by Pre-requisite checker and via browser login.

Please suggest:

1) Possible cause for issue.

2) Where working logs could be checked for this action?

Warm Regards,