Hi,
Do you mean that you are unable to configure your email account on Outlook? Or it keep prompt you to enter password even you already input correct password. Is there any detailed error message when the issue occurs?
I see you have tried using a new profile but it didn't work. In this case, please try exiting Outlook desktop client and see if you can use the web mail normally?
Besides, there could be some add-ins in your Outlook client that cause this issue, so it is suggested to start your Outlook in safe mode (Press Win + R, type “outlook /safe”, press Enter.) and see if the issue continues.
Hope this can be helpful.
Regards,
Aidan Wang
Please remember to
mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact
tnsf@microsoft.com.