Hi Ajyendra,
Below is my configuration in AAD and postman environment.
AAD:
Set items in screenshot to True:
Add dynamics CRM permission to user, and Grant admin consent for Contoso.
(Not sure whether redirect URL is required, but I added it and set it as callback property in my Postman environment)
Postman:
Environment settings:
I still use OAuth 2.0 and Implicit instead of new NTLM to get access token.
It works well to get instance informations after I requested token.
Please also ensure that your account has System administrator security role.
And most important, crm<i> should match to your region,
mine is crm5, if I also use crm, then I'll also get 401 error.
401:
Regards,
Clofly
