I want to authenticate user using Microsoft graph azure (ROPC) but i got some error . I think that there is some issue during azure app setting. all error which i face are given below
consider the permission of application needs, click the grant admin consent permission if you accept the application's request for certain rights.
According to your image 2:
AADSTS50034: The user account {EmailHidden} does not exist in the domain.onmicrosoft.com
This error occurs due to if your company domain has not been registered as a verified domain within your Azure AD tenant you will get an "invalid user name or password error."
For more information refer this SO thread